My father, an engineer says the following...
Hold your hand out in the Sun, does it burst into flames? NO. Because it really isn’t that intense.
Now soak your hand in 20 cents worth of gasoline and light a spark. That is intensely concentrated energy.
only 20 cents and a match, forget thousands of mirrors and the time necessary to attach them to a salvage satellite dish. Your dad has broken this down to the real bottom line.
Too bad your dad isn’t in charge of the economy of California. I’m betting he would have that problem solved in a jiffy. Then on to the world.
And what happened when you tried that?