To be fair, twitter ended up useful for him when he used it to buy his way into the US government and close down all the departments that were investigating his companies for breaking all sorts of laws.
On the other hand, buying twitter was the turning point for his public image. Before that, he was Tony Stark. Now he's Lex Luthor.
Did the total of fines the US gov't was looking to levy on Musk total up to more than the $44Billion he spent on Twitter?
As a business transaction: Twitters acquisition is among the worst deals in human history.
As means to buy an election an Presidency: highly efficient use of capital with an undeniable short and long-term ROI.