Valve's track record with non-VR hardware is, to put it politely, not good. Seven years after launching the Steam machine (2014) initiative, there are no Steam machines available for sale. [1] Both the Steam Controller (2015-2019) and Steam Link (2015-2018) are discontinued and cannot be purchased, despite consistently positive reviews from users. [2] As other commenters have noted there are already numerous "Switch-…
After all, Microsoft could pull an iOS and insist on a cut of all sales on Windows - or make the microsoft store the only way to distribute software.
Like a pilot with a parachute, they'll dutifully maintain it - but they hope not to need it.