You should be aware that much of the effort of some big players like oracle and even microsoft goes into Linux. I am not aware of how this is for other FOSS projects but I would assume many companies have embraced open source. This may not be out of the goodness of their hearts but they definitely pour a lot of effort into these ojects and I think that is the beauty of FOSS, but also the beauty of the free market.
You should be aware that much of the effort of some big players like oracle and even microsoft goes into Linux. I am not aware of how this is for other FOSS projects but I would assume many companies have embraced open source. This may not be out of the goodness of their hearts but they definitely pour a lot of effort into these ojects and I think that is the beauty of FOSS, but also the beauty of the free market.