You do know that you are talking rubbish, right ?
If you looked carefully into how governments are run, you will come to the conclusion that many business sectors are subsidised via tax breaks from governments. Many companies get tax breaks such as for the Oil Extraction and Exploration companies. Different business sectors use different accounting methods and tax rules.
"very skilled in mismanaging money on a massive scale" if this were really true there would be a fraud case but no such case exists, Mr Musk is putting much of this money into constructing infrastructure. I suggest you wait another 10 years to see how these investments bring success.
"exploding rockets" is part of the rocket industry and is calculated into the costs and insurance. It is sad when rockets fail. The important thing is that lessons are learned from the failures as this knowledge can be used to improve the rockets.
"building self-crashing cars" is a false premise. The driver is still in charge of the car when the auto-pilot driver assist is used. You should compare traditional car crashes with crashes of electric cars (EV's) to come to the proper conclusion that EV's are safer. There will always be some horrific car crashes.
EV's will be the dominant form of transport within 20 years from now, You need to get used to it.