Because that means you must allow them to dig in their drm far deeper, and thus lock all your users deeper into google play over just android. Very similar to their push of safetynet and their new web drm.

In practice for users right now it means a less stable experience, and all kinds of weird problems in usecases like work profiles. Plus all the things they'll abuse this for once enshittification gets going on that section of the google play system