I think whatever the setupper of the computer dictates whatever Internet is, and secondarily the OS vendor if the new user doesn't have a tech friend.
I don't think Chrome is somehow == Internet for these people specifically. (Personally I call the shortcut "Internet" so it's consistent across devices and they don't have to recognize Lightning on their phone and Firefox on their laptop.)
The Google homepage on the other hand...
Android is the most popular mobile OS (+70% of market share[0]) and most Android phones sold outside China come Google Apps/Chrome pre-installed. That's a lot of Chrome installations.
And now Chromebooks are selling like hot cakes (30M in 2020[1], a huge increase mostly because of the pandemic) and Chrome is the default browser there too.
[0] https://en.wikipedia.org/wiki/Usage_share_of_operating_syste... [1] https://www.androidpolice.com/2021/02/01/chromebooks-continu...
But also Chrome isn't super hard to install anyway and the dark patterns "help" with the process. Go on Google.com with MS Edge and it'll tell you Chrome will give you a faster, more betterer Internet. It must be pretty convincing to hear that from the de facto arbiter of the world wide web and all you have to do is follow the pretty blue buttons. I was able to install Roblox when I was 10 with less guidance.
> We also often encounter websites that block the exact string “Vivaldi”, with no contact or warning to us. This is particularly problematic when the larger technology behemoths (some of whom we directly compete with in the browser space) do this
Not saying it's right how Chrome is pushed though. IMO, ideally there would be regulation requiring Windows to offer a fair choice of browser downloads (none preinstalled) when you set up the computer, and google wouldn't pull it's "faster, better browser" thing when visiting their search site.
The Google homepage for years said that web users should install Chrome and now almost everyone believes it.
Beside that, a lot of people is induced by Google to install Chrome. A lot of Google services doesn't work so well in browsers that are not Chrome. One of them is Google Meet, that is used in my country by a lot of schools. This is of course by design, there are no reasons Google couldn't make a software that works in all browsers.
And chrome OS come bundled with chrome too.