We've heard a lot this month about Xbox's new Project Helix console and how it'll support both console and PC games, and the belief is that it'll work similarly to how the ROG Xbox Ally handheld currently does — you'll boot into an "Xbox Mode" interface, but with the ability to exit out to Windows if you want the freedom that comes with using a PC.
Microsoft is obviously keen to keep you within the Xbox app as much as possible though, and we saw an example of this when the ROG Xbox Ally was first released, with the team making it possible to not only load up Steam and other storefronts from within the Xbox app, but also to access games from those storefronts inside the Xbox app too.
There's still work to be done here to make this an even more intuitive process, but it's definitely proved a popular addition, and it's something I personally use with my ROG Xbox Ally X on a regular basis.