What do you mean not every casual computer user wants to wrestle with drivers, troubleshooting and running everything through wine all the time?

My money’s on a new Index. Possibly with onboard graphics like the Quest

Exactly, same architecture means nothing if it only draws a fraction of the power, eg from a battery and not mains. Not only that, but size and cooling constraints mean with our current tech, it’s impossible to have a small handheld as powerful as current gen consoles