> Emulating Android sufficiently well enough to run Android apps is a decent start, but so many apps rely on Play Services and Play Integrity that it's a losing battle, or at best a cat-and-mouse game to keep things working.

This is where antitrust laws are supposed to come into play. Play Services are a pain but in principle you can implement alternatives to them. It's the attestation stuff which is aggressively anti-competitive -- literally setting up a system with the primary function of excluding competing implementations from compatibility.

We can't let corporations get away with the fraud that competing with them is a security vulnerability.