If there is one company of FAANG who's up for this task -and can beat Google at their game- it is Apple.
Also, I have serious doubts that Apple can beat Google - and it certainly won't be "at their own game" (which is advertising).
A time when the digital divide was vast & software companies had no reason to heed the interests of those without disposable income... ;-)
BTW, how are ads incentivizing user-focused development? Look at the Top 100 apps in any apps store, and tell me they're not virtual clones of Clash of Clans, Plants v Zombies and Candy Crush. Every developer is heeding self-interest first.
Do you really think you'd have so many developers, competing so aggressively with each other in an attempt to appeal to millions of people with a collective negative disposable income, the bulk of which is probably not spent on software at all? No. Even if you were hugely successful, you'd be lucky to get enough income to pay a developer's salary.