If we can make this kind of technology, why can't we make clean energy?

As a dormant holographer, I wish I had seen that. I suppose that "In the next few years..." it will become far less amazing than it is today, although a porno holo-site idea I'm sure would be a real cash-raker.

If we can make this kind of technology, why can't we make clean energy?

Perhaps because there is more profit to be made by providing bread and circuses ..... at least in the short term.