Pretty good read. Nothing very surprising and I might make the same kind of recommendations. I would have tried to phrase several things with less prejudice, though.
I could live comfortably on a small fraction of that, so it would pile up really fast if I had long to live. Not going to be billionaire money, but easily in the "think about pouring that somewhere good" money.
Also different user. His life's work had been to create the most evil corporation the world has ever seen. The largest monopoly. It's still allowed to run and controls entire governments all around the world. Most companies, schools and government functions of many countries are completely tied to Microsoft cloud and their software and have no choice. This has essentially halted all technical progress and research on many fields because the results can't be productised. The loss and corruption is endless.
It's been going on and ramping up for over forty years. It's still going on.
Forty years is a good "why" for why musk is nothing compared to this evil.
Those mostly don't work with modern keyboards, though. The protocol switch was built into the keyboard and the dongle is just passive. It's actually a bit hard to quickly find a ps/2 compatible keyboard these days.
I'd say it's uplifting, but not really news.