I strongly doubt it’ll be comparable in price to the PS5. They’re sold at a loss by Sony. Valve has already made it clear they are not doing the same.

GOG games are DRM free, pretty easy to share with family. Saves might be tricker on a single deck, but the game itself may have multiple save slots.

I don’t think so, no. It seems like it’s just a simpler installer that focuses on one service, instead of several.

Your client is still Windows Store exclusive? That’s a hard pass from me.