There is a book by Livingston about the early PC industry. I lived through it all CP/M, DOS, Windows. None of those guys had anything but brains and the gall to think they had something great. So they found contacts. You'll find Marketing is ever elusive to us Dev types. We just don't understand it. Money you can always use as an excuse. Get on one of the freelance programming sites. Since you don't care about monetary concerns do those tasks. If you want exposure, join an open source project that tickles your fancy. There are over a million of them out there and they need the help. As far as "its been done before". The cell market was already done when Steve Jobs flipped it on its head. Also he flipped the music industry on its head with the dollar a song model. They all made massive money from this new scheme. Good Luck.