Yeah, I really think the rise of platforms like the Xbox Live Arcade and Apple's App Store really works so well for SEGA. They have so much incredible games lost in their backlog such as titles that only ever received arcade releases that would have been a gamble to release to retail. Not to mention, smaller more easily assemble and instantly enjoyable games are more of what SEGA is about in general.
At the same time, I do not think they are spending their money in the best ways. Mainline Sonic games like Sonic Unleashed only receive around 15 million for budgeting, which is pretty silly considering they know something like that would sell good enough and that a high quality mascot game helps their overall image more than any other random title. That is not to say I think they should spend their entire quarter of profits on one game, just that it would not hurt them to spend a bit more.
It is even more silly when you consider games like Valkyria 2 and 3 getting similar budgeting. Sure they do good enough, but most people into the industry ignore the handheld market, especially PSP. Why not spend a similar amount of cash on a new original HD IP that is not from PlatinumGames?