I think it would definitely do both. PC gaming has gotten a fair bit more expensive lately with the rise in GPU and motherboard pricing and all, and it's definitely going to have put off plenty of people who otherwise might have been interested in checking out PC gaming. A subsidized, fixed spec box that offers truly good performance per dollar again would be super appealing to a lot of people, I think. Something relatively affordable, but also something that would get a fair bit of explicit performance profile support for in games due to its popularity(ala Steam Deck), making the experience very accessible for those coming over from console gaming.
And it would be popular for existing PC gamers as well, and perhaps even people like me who have refrained from upgrading for quite a while now due to disgust at the pricing situation. My purchasing of games has died down a whole lot, because I straight up cant even play modern demanding games(at least not without unacceptable compromises), so I'm sticking to mostly my backlog and the occasional purchasing of an older game for fairly cheap. So yea, with a properly capable box, I'd definitely be more motivated to increase my purchasing habits on more expensive newer titles.