This is destroying and devaluing the app ecosystem on all platforms, discouraging companies from treating it as a stable target, right when Apple is gaining dominant market share.

Is it really worth executing payments, maps, geospatial APIs, etc. on one platform if >30% of your customer base can't use it and it changes every 6 months (because that's what they've engineered)? No. Who wants to maintain that?

Then what is the interface people are pushed to? The browser, where Google historically dominates.