Microsoft was the original tech-bro poster child. They grew up and became a household name in a much different economic and regulatory environment in the 80s and 90s that gave more of a shit about antitrust stuff.
Apple and Google had a much more favorable, and more lax, environment in the post-Bush era during their big growth years in the late 2000’s/early 2010’s. By the time they got around to doing the same shit Microsoft did, antitrust was already dead.