I just realized something…
At some point, Valve will release a Steam Deck 2 - It will be slimmer and even better than the first. Maybe in a couple of years I am guessing
Then that will be it because other companies will be releasing cheaper devices with their Steam OS. Steam simply cannot compete with them on price, and the feature set (other than faster chips) will mostly be locked in.
In short, there will be now Steam Deck 3 - Gaben strikes again
Came hear to say exactly this. I’m no expert, but this sounds like the right answer