> everyone just installed chrome because the website google told them to
I believe we actually went this way because all the techies adopted it first, not because it was some evil overlord that told everyone to. As a teenager, I installed it for some of my family because it had fewer knobs to push than Firefox at the time and it was faster at the time so that was cool as well (especially because they usually had older devices). Can't install toolbars in there etc. Then came Google's cross-site tracking by tricking users into logging into the browser and such. I kept using Firefox myself because I was used to the dev tools, theme customizability, and powerful add-ons, but it's not like I didn't contribute to the problem
That said, I also still wonder how (as you hint at) them advertising a product of theirs on the search engine homepage, a legal monopoly afaik, is not abuse of market power to illegally create a second monopoly. Firefox and any legit browser vendor who asks should be able to get the same ad on there for the same duration (years iirc, perhaps on and off), prominence, freedom of wording, etc. There is certainly an advertising aspect to get the last bit of the market, create a real brand name ("oh yeah I know that icon" when it's shown in the ads, not just know that button on your screen as "the internet"), but the first >50%... I don't know