1. Develop/release indie game on Windows.
2. Sell a lot of copies (relatively speaking).
3. Sony gives you free SDK.
4. Release indie game on PS3/4.
5. For your second game (e.g. Transistor, The Witness) you can develop for PS4 in parallel with Windows because you already have the SDK.
I've dabbled with iOS games but found it a tad boring as I love games with proper controls so the possibilities of this excite me.
http://www.pocketgamer.biz/r/PG.Biz/PlayStation+Vita/news.as...
I haven't personally done it (though I'm considering trying it for a small-ish project) so I can't speak to how many hassles there are.