I'm holding out a little bit of hope that Valve puts out a laptop - the Steam Deck has notably good power management for a linux device of its class (and I've even heard of people using them as laptop replacements), though the idle power is still higher than a Macbook. They're going to have made a desktop, gaming handheld, and VR device; why not one more?
Maybe they will spend more than five cents and get a decent hinge? I would love to support Valve if the build quality is good and the price is decent.
What would be the reason for their laptop to exist? People on the move get the steamdeck. Others get the GabeCube. Based on the steam hardware stats / graphics cards, there's very little laptop usage. I'm not sure there's enough market to get them interested.