How is Instagram dependent on whatever Google decides? How is Facebook, TikTok and Snapchat? How are streaming platforms dependent on Chrome? Big businesses with a ton of users easily launch their own apps to sidestep Chrome. And if Chrome makes fundamental breaks of HTML and CSS, then most of the internet is going to be broken in Chrome.
If your bank website stops working in Chrome, they're not going to change their website. They're going to ask you to install another browser.