Well, no. That's why they used custom parts. I'd rather have a slightly larger machine that I can actually maintain though.

Also why are you so confident devs will "optimize" for the steam deck? That's just wishful thinking and I highly doubt it would happen. I also don't know what you're talking about when you mention "software support". Every pc component I've bough has had software support from its manufacturer.

There's not even a cost advantage. We don't know the price but valve already said that it should cost about the same as building a similar pc.