I mean, I clearly remember firefox being terrible back when Chrome was just beginning to take off.
It was a lumbering monolith that ate all your ram and loaded pages at a glacial pace. Chrome was a multi-process revolution from that.
Then, firefox got it's shit together and chrome got overloaded with corpo bullshit.
I feel like the true decentralised approach to video that may work... Are torrents. Don't know if PeerTube works that way, but if you're allowing people to eat your bandwidth with direct streaming, you're gonna run into problems sooner or later.