It's not a trivial task, but yes, they could and should. They could also just officially start supporting existing android alternatives such as GrapheneOS by re

It's not a trivial task, but yes, they could and should. They could also just officially start supporting existing android alternatives such as GrapheneOS by requiring banks and government ID apps to be independent of Play Integrity, which can be done today for very little money and effort. Sideloading is not at option from 2027 since it will be made much much more difficult than it is today, requiring users to enable it via developer options and wait 24 hours.