Now Is the Time to Start Planning for the Post-Android World | Linux Journal https://www.linuxjournal.com/content/now-time-start-planning-post-android-world
This is going to be interesting.
I don't think Android has peaked for 3 reasons
1.) Google's less-than-free model where they pay carriers & manufacturers a revshare in addition to offering the service without direct cost (beyond spying on people)
http://abovethecrowd.com/2009/10/29/google-redefines-disruption-the-less-than-free-business-model/
2.) in a market like Russia where Google was fined for setting Android default & they switched away from default settings they did lose *some* share of mobile search, but they still retained a good slice of the market
https://techcrunch.com/2017/04/17/google-reaches-7-8-million-settlement-in-its-android-antitrust-case-in-russia/
https://clicky.com/marketshare/ru/search-engines/mobile/
http://gs.statcounter.com/search-engine-market-share/mobile/russian-federation
http://gs.statcounter.com/search-engine-market-share/mobile/russian-federation/#monthly-201507-201809
3.) there is already consumer (& developer) lock-in with the Play store. Chinese app stores often give developers about 30% while keeping about 70%, while the Google & Apple app stores only take about 30%. Some huge players like Netflix have incentive to try to circumvent that payment, but most smaller developers would find paying that cheaper than maintaining 4 versions of their codebase & testing across 4 operating systems or such.