Sega logic is anti-logic. My logic is that if Rising was indeed ported by about four people, Sega probably should throw money at the team to bring across Bayonetta, Vanquish, and Anarchy Reigns. I'm not sure how much work was done on Rising from scratch, but I assume a little more as this is the first public release build of Platinum's engine, an engine used by those other three titles (if outdated builds). Though the short length of Rising may be countered by the length of Bayonetta, paying for QA and all. So, in my head, you'd get those games ported and up on Steam. Anarchy Reigns maybe not because of additional work on multiplayer, but Vanquish/Bayonetta should be fine. By the time a good launch discount and various early Steam sales are out of the way, you should have more than made your money back and helped cultivate an audience for your titles on the PC platform.
But I have no experience running a business, certainly not a game developer or publisher, and thus what seems like logic to me could in turn send someone bankrupt
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