Did it occur to you that people buying iPhones are buying them in spite of them being locked down, not because they’re locked down? Or that perhaps they’re prioritizing other needs and wants over the App Store situation? The claim that people are choosing to buy an iPhone because it’s locked down is unfounded at best and completely false at worst. In reality most people probably don’t care if it’s locked down or not, they just want an iPhone. If Apple did have an official way to support third-party app stores (but that were not pre-installed), would you stop buying iPhones? If not, then you can see why your logic is flawed. Few people are likely buying their phones based on the availability of third-party app stores.
I buy iPhones because they work with my Macs. Having an iPhone and a Mac means it makes the most sense to use Apple Watches and Apple TV’s as well. And because I’m so embedded in the Apple ecosystem it made the most sense to go with HomeKit compatible smart home products. Smartphones and the choice on which one to buy is based on far more than just what app stores are available on them.
People ultimately want a safe, secure and convenient means of purchasing and downloading apps. I fail to see how third-party app stores are going to ensure that. Apps like Facebook are obviously not going to play by Apple's rules the instance they are allowed to circumvent them. I could write an entire essay about how I feel that Apple isn't clamping down on companies like Facebook hard enough, and how I wish Apple would just acquire an app like Lockdown (an on-device tracking blocker) and preinstall it on all Apple devices and bring their tracking to a grinding halt.
In the end, it's a means to an end. I like the apple ecosystem not so much because it is locked down, but because of the benefits that its locked-down nature brings. This to me is worth far more than whatever benefits an open ecosystem brings, and I dare say that the drawbacks are definitely not worth it.
Look at the state of the google play store and it's not hard to see what Apple has gotten right with their own approach. Apple has aggregated the best spenders on their platform. This means more developers on board, creating iOS-only apps like Apollo, Fantastical, Overcast, Notability, Lumafusiom, you name it. I couldn't side load these apps onto an android device even if I wanted to simply because they aren't available.
The inability to side load apps means a lower incidence of piracy. Developers earn more on iOS as a result, which means they support the iOS App Store more. It's a virtuous cycle.
At the same time, being able to side load apps hasn't stopped Epic from trying to play punk with the Google Play Store either. They just want to earn more money and they will burn the App Store model to the ground to achieve their aims. These companies are not your friend.
I can understand Apple being cautious with novel concepts like game streaming apps, because these have the potential to upend the entire App Store model and threaten the viability and vitality of the App Store. I don't pretend to know what the right middle ground ultimately is; I will leave it to Apple to figure it out.
Some have argued that Apple should allow developers to use their own payment systems as well, so they don't have to pay Apple that 30% cut. Again, think about what this means for the consumer. Prices are not going to drop. Apple lowering the commission rate to 15% for developers earning under $1 million has shown that. Apple earns less, which means that they have less incentive to continue investing as much as they have in maintaining the App Store. The Google Play Store is proof of that. It's a step back for the end user.
I can get wanting to access certain apps that are otherwise not allowed in the App Store, like google stadia. My concern is that while the initial thrill of finally getting that one app may taste like honey on your lips, the long-term repercussions of such a move will leave a bitter, lingering aftertaste in your mouth for the rest of your (and our) life.