woelkchen

It might also be a single dev who pushed for it. With only a 1-3% market share, the company is unlikely to push resources at it.

And yet Microsoft and all PC OEMs panic at the existence of Steam Deck and throw resources at Windows-based competitors.

Why does such a game need a bordered window anyway?

But Proton is not one API. There is a reason why Valve maintains multiple Proton versions and keeps them around. Cleanroom reverse engineering Windows is a moving target. They are at developing Proton 10. How long can they keep it up to maintain old Proton versions for old games while advancing Proton for new games? Will the workload break them at Proton 20?

Steam Linux Runtime is a less moving target. Valve bases a new SLR version on every second or so Debian release (IIRC SLR 3 uses Debian 11).