Google is not like that, the moment you don't like the service they are providing you can switch effortlessly.
Search... well, the *vast* majority of users still use Google; as a site owner you have zero choice in playing with the Google monster. As a user, sure, you have choice but depending on your choice of browser this might be harder to change.
Speaking of browser, are you trying to tell me that Chrome isn't effectively a monopoly? If Google wants something in the spec to benefit themselves, they'll shoe-horn it into Chrome and as a result everyone downstream inevitably picks it up. Consider: Google basically funds the entirety of Firefox's development so they can point to it to say 'look we're not a monopoly' - but basically everyone else on the desktop is a Chrome reskin (Edge, Vivaldi, Brave, Opera etc. are all based on Chromium which is still driven by Google)
And that's before we get into all the less monopolistic services that Google runs that you see in surprising amounts of places; Google Maps gets embedded in a bunch of sites, Google Fonts appear on many sites, so many domains are using Google Workspace for their email.
Moving away from Google is in no way an effortless move. I suggest you try it sometime to see how difficult it really is.
Edit: I suppose that’s also the reason Epic’s anti-monopoly lawsuit against Google was a win for Google, because it’s so easy to switch? Oh wait, no, Google lost that lawsuit precisely because it’s not that easy to switch and Google were abusing their position as a monopoly.