Of course I can make a game for free on my desktop, laptop or phone and have many options available. But I was literally just last night thinking about making something for use with a controller on the sofa and bookmarked Unity for further consideration. I'd rather use Godot but I don't think that works with consoles at all.
It sounds like this still works for older versions of Unity? I am not imagining anything elaborate/commercial. The ps3 is not the best computer (or even console) I own, but it's one I like and use daily, even if just for a few minutes to play an old game or watch streaming video.
Edit: after looking around Unity's website it seems they're just not catering to hobbyists at all any more which I guess makes sense from their business perspective. Oh well.