Google could pay chrome billions just like they pay mozillla and apple…
Besides it’s not like that’s really true anyway, chrome would make tons of money independently, it would just sell user data to Google or other parties instead of Google getting it for free. Chrome ‘doesn’t make any money’ because it doesn’t need to on paper, the same way a parking lot doesn’t make any money for a grocery store, but if a third party owned the lot, the grocery store would just pay them to use it, or the individual people using the lot would.
Chrome is the biggest browser and successfully collects data on billions of people, additionally, chrome development would absolutely be supported by all of the companies that build chromium based browsers like Microsoft, opera, brave, etc.