I don’t. Every major company with a killer app will make you use their App Store. Want Facebook, WhatsApp or Instagram? You need to install the Meta App Store first. Same thing for Google apps. Then for Microsoft apps you would need the Microsoft 365 CoPilot AppPass Store for iOS devices.
That's fair. Knowing Microsoft, they would actually have three different app stores that are completely incompatible and all competing with each other.
That hasn't really manifested on Android though. It's relatively easy to install F-Droid or something, and it hasn't led to forty different separate app stores.
Saying that something that has ~40% market share "doesn't matter" and the other thing that has ~60% is suddenly orders of magnitude more relevant sounds ridiculous.