Earlier quoted context omitted.
Playing the game according to the current rules seems preferable than playing the game according to rules that may or may not come into existence. Also, they will still be one of the, if not most, profitable businesses in the world even if they lose all the App Store revenue, so it does not seem reasonable to expect more.
Companies of this size need to play the long game, but quarterly OKRs and a beuracratic structure ensure they only ever play the short game. The 30% is great this quarter and next quarter, and every quarter until the quarter where it goes away completely. Keeping it this high is extremely risky behavior, literally taunting for regulation.
If it was true, these short sighted companies would fade away in the long run.
Empirically, top companies stay on top for decades.