Current solar technology still makes the kWh 5-10 times more expensive than the existing producers (or than wind), so it is impractical to develop it on a grand scale yet.

But it needs to be supported precisely to get costs down, and for small scale, local, individual use. But that's someone else's job...

You'll be happy to know that a lot of money is being invested in the secotr right now.

In the long run, we're all dead. John Maynard Keynes