web apps are the future that may take as much as 90%+ of the 100B app store revenue
web apps will succeed once good programmers and companies make strategic decisions to build good web apps
crippling web apps on one important major platform like iOS stalls these strategic decisions since it is not easy to tell your programmers that now you learn js and web technologies if you still need those native apps
in addition, most companies have already published native apps, web apps will start to gain success after apple is forced to let them work with feature parity on iOS etc. AND 3-5-10 years pass since rather new companies choose web apps
get back to your observation of "popularity" after apple is forced from governments and competition authorities to support web apps on iOS (just like on macOS or every other OS does) plus 5 years!