The OP likewise spent his life (or some substantial part thereof) honing the skills required to do this (and do it in a short space of time) then give it away for free including source code.
At that point you have to acknowledge either the significant charity of that act or the relatively small nature of the original idea (not to belittle or impugn dcurtis's abilities, motives or skills in any way).
Look, I would take this as a relatively cheap entrepreneurial lesson: if your idea is extremely reproducible it can still be a business but you need to be first and you need to be ready to scale. Invite-only works for things that are hard to reproduce and/or have some kind of lock-in or network effect.