

I mean after Valve released the Steam Deck, Asus, Lenovo, MSI–to name just a few–followed suit with at least an iteration. Asus has the Ally and Ally X, Lenovo now have 3 models, and MSI only has 1.
I can’t recall if there are any other big brands handheld PCs, but there’s definitely Chinese ones.
Pre buy out, Opera was kind of moving towards what Proton is doing now.
Now Vivaldi sets to continue that trajectory.
It’s weird that Mozilla didn’t. If they do it now they’ll look like copycats, and they’ve burnt a lot of supporters with their TOS boogaloo it would take a lot from them to claw back some of those supporters