If you are not spending money you do not have to make money.
It does not take much money to buy food. Housing is a big cost but I am sure those in the group who can afford housing are helping others out by letting them stay in spare rooms free of minimal rent.
More power to these guys since they are somehow able to make this work and chase their running dreams. They may be sacrificing some things now and in their future some but its their life.
D Hunter deserves much more credit than he gets for unselfishly setting up TME, and providing the opportunity to all these other runners to train. TME would not exist without him and we can only speculate how he has used his own money, status and influence to make TME a reality. He could have easily just lived and trained alone and banked his adidas money. Yes TME provides him with a training group and college team like atmosphere, but it collectively benefits others more than himself.
I can't think of any other pro runner who has publicly used their status and influence to set up and assist a large visible running group/team like D Hunter has.