Apple is way worse in this regard, but Google is still incentivized to keep at least PWAs from being first class citizens on Android because they don't get their app store sales cuts or microtransaction money from them. And at least on Android you can install other browsers.
People consider the hegemony of Chrome to be the premier threat to the open web but I keep feeling iOS Safari is the real drag. Apple is so heavily incentivized to sabotage web tech that could encroach on their app store revenue.