Microsoft has recently released their Xbox Cloud Gaming service to their Xbox Windows program and Xbox Game Pass phone app. It was only available on browsers via their website until a few days ago. This service allows Xbox Game Pass Ultimate users to stream console games to a variety of devices. In the future Xbox One and Series S/X consoles will also get the ability.
A couple of months ago Valve announced that software would be sold through Stream. The first few software titles are now available on Steam for purchase.