Unpopular opinion, but if I wanted multiple app stores (and all the associated benefits and risks) then I would have opted for an Android.
The walled garden approach works for me, and I don’t want to be inconvenienced and my data put at risk because a particular, necessary app is only available through a 3rd party platform.
Now, Apple being forced to reduce the % of app sales down from 30% to a more reasonable number I am all for.