I would like to see Xbox, take the steam deck angle for handheld but do that for a console.
They could make the Xbox Deck 1.0 and license it out to whoever wants to make it as the system baseline spec, provide those who meet licensing requirement access to game pass sdk to ease adoption and integration and let 3rd parties handle the hardware entirely while they focus on software and distribution. Then they could announce after 5 year or 7, Xbox Deck 2.0 is coming, and rinse and repeat, with upgraded Deck 2.0 being the next Gen.
As long as the specs are locked down or have a baseline, it should assist all the hardware manufactures and customers.