As Paul Graham says, we should be ambitious and optimistic. Energy is a big problem to solve. Perhaps the most important next problem? As @hodder says, YC is no

As Paul Graham says, we should be ambitious and optimistic. Energy is a big problem to solve. Perhaps the most important next problem? As @hodder says, YC is not the best place to build this. So, it is reserved for the big ones? What could be the solution? How to incentivize the creation of more in this field?