actually, that's the point of p2p: it doesn't cost developers anything. I don't have to "win" at market share to make it either, just enough mass to develop a self-sustaining community of users and developers. I don't have to make a ton of money for it to be worth it either. my infrastructure costs are effectively zero, so I'm really paying for my time. I can use liberapay and crypto to take donations/tips, I can sell my expertise in p2p as a contractor, &c.

the most important point is that I can keep going indefinitely as long as I don't get bored, because you can't outspend me if it doesn't cost me anything to keep going.