If we are being fair, they are still reasonably fair to users. Open source gaming is not a reality.
They don’t force you to use Steam, but still work on Proton as Open Source. They don’t lock down their hardware.
What I’m trying to say is, while Valve is not perfect, it’s much better than any big tech alternative.
It working again after cooling down is an indication for heat creep IMHO. The filament is getting too hot up to where the gears are, causing them to slip and not feed filament.