As a user, I sympathize and agree wholeheartedly with this argument.
But as a developer, I feel like one of the winners. I certainly don't miss the days of adding complexity to my build tooling or limiting which features I can use, just because I still need to support some inexplicably popular browser that last received updates half a decade ago.
I'm not sure what the answer is, but perhaps some crazy person out there should consider building their own browser from scratch. That's the only way we'll get more open competition in the market...
> it's only been in recent years that all the browsers became "evergreen" and are able to add new changes at a rapid pace
The "rapid pace" is due to basically only three browsers left, and the only winner is the browser cartel we're enduring.