Except there is money to be made in the green energy industry. There's no money to be made building a giant radio telescope. Sometimes corporations have a need for scientific institutions and their patronage helps keep the lights on but I really can't think of any way that can apply to something meant to stare at the stars. What could help is designing a radio telescope that have both scientific use and military use like China's telescope in Argentina. You have one user willing to pay plenty for time on it and another user that is just happy to get some work done.