>No sensible person goes into FOSS for the money

well, going FOSS can be an effective marketing strategy: by making something open and free (in both meanings) you get much higher probability of that something becoming popular. That in turn gives a lot new opportunities to sell complementary something or other something. This is best case scenario though, and you need to have resources/other sources of income for the time it needs to get widely adopted and popular (or the very possibility that it will not happen at all)