Insomniac owns the IP, so it's technically possible. MS probably has first refusal rights, though, so I would doubt it. SO is on the slowly growing list of games that might get me to eventually get an Xbox. Game looks sweet.
This whole IP ownership thing seems like a false prophet of hope to me. The only game I can think of that ever got ported with the same sort of deal as Sunset Overdrive was Mass Effect and that took EA acquiring Bioware and waiting 5 years or so for it to happen. MS held on tight to those publishing rights.
If you want them on PC, you're in luck because MS aren't against that both in what they have said and what history shows to be true but other stuff doesn't go anywhere outside of that.
Publishers want to own IPs and generally they do except for when you are dealing with developers who have mega hits (like Respawn/TF = COD and Bungie/Destiny = Halo) in their past. Microsoft let Insomniac do that and I bet in exchange as you would expect Microsoft got that locked down tight unless they tell Insomniac they can do otherwise. Insomniac are a great studio but I don't know how many other publishers would have given them the deal MS did with IP ownership and full funding, I would guess that given their Playstation roots, they probably weren't too keen on the Xbox exclusive idea but you take the best deal.
SO doesn't seem to have set the world alight despite how great it was, it will probably be a while before they go back to it. Of course, I could be wrong but looking at history, I don't see why this would be any different to other games.
My main prediction for E3 is that every new game announcement Microsoft Studios make is owned by them. Gigantic isn't but I suspect that is because the game didn't require full funding, thus it wasn't an issue.
