The quality of the game is excellent but i’m guessing it would cost too much.
I would imagine that since Frogatto uses OpenGL that XBLA or XBLI is not an option (DirectX only). On top of that, even if you managed to port it I’ve heard that Microsoft charges a lot and takes a hefty percentage of sales for XBLA games.
PSN charges the Dev for odd things like demo downloads for the first 60 days and I don’t know the pay system but I’d imagine the same $50-200k for a license and many other things that XBLA requires is too costly.
WiiWare has potential upside. I believe it supports OpenGL and if a publisher finds that Frogatto is marketable they foot the bill for the license and other expenses. Most publisher deals involve them owning the IP though so unless you retain the rights it’s definitely not ideal.
I have no info on Steam but it may be a good option for a sequel or future IP since Frogatto is already free on PC. A sequel containing the original as a bonus would probably help sales too.