Depending on the project, you could try to see if can get even one sale before you go all Gung-Ho Startup Mode. If the project can earn that first dollar, then

Depending on the project, you could try to see if can get even one sale before you go all Gung-Ho Startup Mode. If the project can earn that first dollar, then you have much more evidence that it is business material and worth your time. If you cannot get even a dollar, then maybe it isn't worth your time. And you will probably regret not trying later on. Better to fear regret than taste it.