Although he is financially one of the richest businessmen in the world, it is also worth noting that the share prices of his other companies could fall through losses on his Twitter purchase. In my opinion his main mistake was disregarding public sentiment. What is your concern?
His failure on Twitter doesn’t implied that his other companies will be affected since they are different industries and most of them is on top notch with their unique feature. Failure is part of investment especially on a guy like him that usually invest on company that can give huge impact to the mankind.
I believe Elon intention on twitter is good but the politics on US kills his ideology to have uncensored public information.