YouTube might be the closest for user generated streaming and video hosting, but Twitch and Vimeo still exist and are happily chugging along. Maps and Search, not really. I'm perfectly happy to use DDG for both, and I'm not made to suffer for it.

As a litmus test I might say that "overly dominant" means that a slightly-above-average member of the audience couldn't name another option, and I don't really think any of these would hold up.

> Also Android, going by market share rather than worth.

Android vs iOS are actually surprisingly close, with iOS winning in the US <https://deviceatlas.com/blog/android-v-ios-market-share#us> (admittedly this is measured through UA sniffing and fingerprinting on websites, but I think the point stands)

> Maps and Search, not really.

If you go with that, OpenStreetMap/iOS Maps and Bing "still exist and are happily chugging along" too ?

In the US maybe, but worldwide Android has 87% market share !

As a reminder, "monopoly" is the ability of being able to dictate your terms to the market - when a company (or cartel) has such a power, the market isn't free anymore.

They are just as dominant as they provide good service. there are alternatives, nobody is forcing people to use Google