Keep chrome installed and fall back iff forced to. That way the majority of usage statistics show up as other browsers so when developers are making guesses at which browser to support, those statistics will push them away from chrome.
Additionally: you would be surprised how infrequently you have to switch to chrome
There's one site I have to switch to Firefox for. And it's a big one that handles a lot of money, so that's kind of surprising. Can't log into their site in chrome, no matter how hard I try. Nor edge.
Additionally: you would be surprised how infrequently you have to switch to chrome