Google is entirely where they are because the web is a powerful capable rich interesting place, that was able to rise & grow & flourish without the typical platform gatekeepers.
In my view, Google's whole reason for making and continuing to fund Chrome have never ever changed: they want a great (and powerful, not small/retrogressive) open web. Because if the web falters, the proprietary platforms from yesterday can come back & reassert their control. Because if the web falters, information will be someplace where a Google can't index and link you to it.
Google's existence depends entirely upon the web being a good place, a place for good sites, that people want to find & go to. The couple hundred million a year Google pays engineers to make the web good is a very affordable existential hedge, upon which the entire company of rests.
A corollary to this is that attempts to tilt the web towards themselves - to take advantage o Chrome - risk poisoning the web & killing the golden goose. Which is why - imo - Google has taken web standards so seriously, and gone to such lengths to create an air of transparency around browser standards, starting the Intent to Ship process.
Linux is foundational to everyone and there isn’t an obvious alternative. What companies care about Safari vs Chrome? From the perspective of other companies, what’s wrong with Safari and Edge taking command?