I don't mean to dismiss your opinion but I doubt this is the reason android has such a huge market share. I doubt the average person even knows that apple forces every app to use apple's own browser. The countries where android dominate are also the ones where you can get phone plans with free data for WhatsApp and Facebook. There is an entire world outside our techie circles where price and UX trumps having principles about user control and freedom.
By law third party engines are allowed since like 2024, geoblocked to the EU, but I haven't seen any news of browsers actually doing that. I think a number of other countries are starting to enforce that, like South Korea or Japan.
