then the question is whether there are really no others want the product as bad as you do, or just simply you have not found a superfan yet. I don't know which one is your situation, but I found it work to go to your niche group (say you are developing product for lisp, then you probably. want to go to lisp meetup). For my experience one or two superfan is enough to at least push your product to moderate userbase. Idk if it helps.