1) You mean like Logic Pro X and Final Cut Pro X? FaceTime? Messages? GarageBand? Pages? Numbers? Keynote? But like you mention, many buy Mac just to get the OS.
2) 90-95% of Apple customers don’t want a headless Mac. Apple made the mini more attractive by beefing up the specs. Yes, they discontinued lower performing SKUs. But as I said, they effectively cut the price on the entry level 8/128 config.
The mini’s got two USB3 and four Thunderbolt 3 ports, so if you want to add cheap USB storage, do it. If you want a larger internal boot drive, you’ll have to pay Apple’s prices
The base model CPU is perfectly fine, but you can upgrade if you wish. If you don’t want or need MacOS, you can probably save money buying a PC, it’s been that way for decades 🤷♂️ (Similarly, if you don’t want an iPhone, you can save money buying an Android.)
3) What you call stale, others call timeless. Smaller bezels isn’t innovation. Apple sells 2-3 million a year and it’s the number one machine used by pros. If innovative design is your priority, perhaps an all-in-one PC would suit you better. Have you found something innovative from another company that you’d rather have?
4) Most Apple customers seem to want a combination of thin, light, quiet and powerful, with great battery life. Many of these features are mutually exclusive. You can’t have all five.
If you’re not satisfied by anything Apple offers, that’s unfortunate. It’s not possible to please all customers, but Apple tries to offer the best solution that satisfies the most customers.
Apple targets the 80-90% customer, so if your requirements fall outside of those that satisfy 80-90% of customers, you might find your needs better met by another manufacturer. (The same thing applies to iPhone, iPad, AirPods, the Watch or any other product Apple sells.)
Apple makes products that many love, and they’ve proven time and again they try to improve where they fall short. But for various reasons, they aren’t the best solution for all customers.
Buyers are very discriminating, and they will—and should—buy other products if another manufacturer’s suit them better. Competition is great, and forces Apple to constantly improve. That’s the beauty of the free market.