I imagine if there’s a coordinated, sustained push by “all” of big tech, one of the next-gen formats might be able to make pretty good inroads if they’re aggressive enough about it. I’m not sure what it would take for them to do it though, particularly because even now some people oppose the use of WebP even though support for it has become pretty good; pushing a new format aggressively would annoy plenty of people who just want “it” to keep working as-is without having to worry if X program or service supports Y format.