They already have been, since the very first day of the Apple AppStore (and hence its copycat Play Store). But they typically hit smaller developers with no recourse. Occasionally they hit the “wrong” crowd and shit flies for a few days, until some bigwig goes “okay, I guess these particular cats deserve a pass, just approve and move on.”

Google and Apple stores are like nightclub bouncers. If they don’t like you, you ain’t gonna dance. “Normies” don’t care until the bouncer picks on them.