devs on pc have to decide which set of hardware to optimize for. it’s a step that they choose based on harwdare adoption trends. There is always a point where something is too hardware demanding that it would greatly hinder sales when making a decision. With a fixed hardware platform, devs have a concentrated point in hardware adoption to target.

For instance, say you developed a game where the minimum hardware requirement was slightly higher than a steam deck. If enough steam deck sales exist, the dev might have an incentive to optimize the game more just to get access to said market.