1) It's unlikely that all those ventures are successful.
2) The ones that get their equipment out the door first will make the most gains, either from mining or selling hardware or both.
3) Those that continue to mine even when the returns are less profitable or not profitable may still profit in the end since some miners will turn off their equipment and I think that most miners involved in BTC have a (reasonable) expectation that BTC/fiat will continue to rise.
Next step is investing in power plant, if there is a guaranteed cheap electricity then the projection will be more positive for a mining operation investment