Using your scenario where Apple anb both makers decide to use If the same hardware.... Apple will lose ground because iOS doesn't have any many features. This is exactly what happened with phones. Android handsets finally evolved to where the makers were using decent hardware and iOS found itself in 2nd place as a platform.
What actually happened is a bit more complicated then you describe it. Apple was committed to just one of the five carriers in the USA for a long time. Additionally, Apple iPhones were only available through limited numbers of carriers world-wide. One company can only do so much. Even though Apple has sold every iPhone (as well as every iPad) they can make, there is a limit as to what can be done. This has allowed the competitive Android phones to find a ready market.
Even though the iOS is the number two platform at present, Apple's iPhone3GS and iPhone4 are the top two selling phones. So, the consumers do not see the iPhone as equal to the Android phones as you seem to think. For many consumers the iPhone was not available on their carrier of choice. With the new iPhone5 and the opening up of the iPhone to all five USA carriers, consumers will be able to vote with their purchases on a level playing field. The result may surprise many "analysts."
Finally, it's really not about the specs of the hardware, as you suggest, it's all about the ecosystem that comes with the product. The competition does not have a unified ecosystem to offer the consumer, so they do talk product specs. Product specs don't mean squat to anyone except selected nerds. The bulk of the consumers are looking for devices that make their life easier and more enjoyable. That's what motivates most buyers, and Apple makes that appeal without farting out specs. It's all about the experience of the apps, the syncing in the iCloud, the elegance of the design, and the number one customer service. The specs only need to be "good enough" to support the experience. We've left the PC era and its spec wars.
I haven't used the new Galaxy Tab 10.1, so I cannot accurately speak about whether iPad2's graphics are still the best, or just tied with Samsung. I wasn't putting the Kindle in contention with the iPad2, I was giving you an example of a low cost device that has it where it counts. Put a pretty display/monitor in front of the average user and they will be 95% satisfied.
I understand that the Samsung and the Apple tablets have about the same image quality. After all Samsung makes most of the displays. If Apple doubles the resolution, and buys up the bulk of Samsung's production for the next two years or so, then Apple will have the superior display going forward.
The brightness and quality of a display is one spec that will influence a buying decision and Apple is seemingly very aware of that.
Unfortunately, I see the same thing happening with tablets as with phones. So much hardware will be available from so many manufacturers that Apple won't be able to maintain their #1 spot.
I disagree with you on this point. The tablet market seems to be more sensitive to the ecosystem it is part of then the phone market. In the phone market the carrier is part of the package, and then the phone is more of a commodity then is the tablet. What's on sale, what is being being promoted when the buyer walks in the door, is all very important to what the buyer walks out of the carrier store with.
The phone carrier is not likely to be a big influencer in purchases of the tablet product. The consumer is likely to buy directly from Apple or through a store like Best Buy. It's an easy sale for the Best Buy people because they know that the buyer is going to be happy. With a brand X tablet, it's a toss-up and they will need to deal with the unhappy customer.
If even only half again as many manufacturers come out with a tablet as came out with a smart phone, they will struggle mightily to make a case for buying their product as opposed an Apple iPad or another Android tablet. They will not be able to count on the carriers leading with their product as the phone companies won't see the tables supporting a revenue stream like a phone will. Apple's competitors can't match Apple's specs and still have the profit margins to cut a hundred dollars from the price or in any way differentiate themselves from Apple or the rest of the Android pack in any other way. If as many tablet manufacturers came to market with a tablet as now make smart phones, they will drive each other out of business, because Apple will still beat them with a fantastic ecosystem and tens of thousands of high-quality apps.
I disagree. Tablets aren't going to get any bigger than they are. Even the most powerful ones with the most features have accessories that turn them into (surprise) notebook computers. The growth will be eliminating specialization of tasks. A tablet which can pull alternative duty as:
-An e-reader The iPad already does this.
-A digitizer (for drawing and taking notes in class) The iPad already does this.
-A television The iPad already does this.
-A mobile phone There's an app for that, and the iPad can also do a video phone.
-A productivity platform (programming/image editing/etc) The iPad already does this.
-Personal digital storage (modular, so that people can expand if they need to)
Is what they should evolve into. Even so, there is a finite market for such devices. I have no idea what you may be referring to. However, since the iPad will sync with other idevices, and can already communicate with the Apple TV box, it is expandible as is.
One laptop makers catch on and start making ultra-thin laptops then tablets will go the way of the feature-phone.
Balderdash!! I would think that you already know that Apple leads the sale in such ultra-thin laptops with the MBA, while also outselling all other smart phones on the market with the iPhone4 and the two-year-old iPhone3GS (number one and two sold), AND is the number one in tablet sales at the same time. This hardly supports your statement.
There is a strong case for all three, and with the automatic synching through the iCloud they will work excellently together making the competitive brands all the less attractive.