[dmitriid]

Have any other browser vendors expressed any interest in this?

I see from the link that Chrome is already doing an "origin trial" even if the spec itself isn't complete. So, why would it be "released more broadly". Or is it the Constructible Stylesheets again? When both Safari and Mozilla said "no", but Chrome released them anyway?

[pjmlp]

I am typing this from Firefox, but the reality is that other vendors nowaydays mostly means Safari, everyone else is using Chrome engine and Firefox numbers diminish every year.

The same crowd that now complains about Google, was worshipping Chrome, talking about how its its developer tools are, the multiprocess architecture, handling hundreds of open tabs (still to understand this one),.....

So if the Web is turning into ChromeOS, they only have themselves to thank for.