Microsoft bailed out Apple with an investment entirely because of anti monopoly regulations.
More importantly, MS kept producing versions of Office and even Internet Explorer IIRC that allowed the Mac to remain an option because of their fear of being regulation.
Then after that it was EU anti monopolist regulations that struck down MS and prevented it from strangling the open web, which allowed the web to become an open platform which made it possible for both the Mac and iPhone (which didn’t even have an App Store on launch and relied entirely on web apps) to exist.
The only success Apple can claim credit that wasn’t directly the result of anti monopoly regulation was the iPod and even that wouldn’t have happened because Apple would have folded if Apple hadn’t been protected by anti monopolist regulations.