Your argument relies on a false dichotomy that reeks of concern trolling. You claim we only have two choices, Apple's tyranny or Google's hegemony. That ignores the third option explicitly mentioned in the parent comment: aggressive antitrust enforcement. By saying "That's what should have happened long ago." you pretend as if we're now helpless, as if we can't still solve it by applying proper anti-trust measures asap.
The existence of a threat from Google does not justify the existence of anti-competitive business practices by Apple. We do not have to "pick a favorite" monopoly, we can and should use legislation to handle both. Framing this as a binary choice is a defeatist tactic that serves only to protect the Gatekeepers and preserve the status quo.