I didn't see Microsoft or companies own by Warren Buffet like Berkshire Hathaway.

Anyways, most of the companies you mentioned are crypto related. If Elon musk is buying bitcoin through Tesla then I shouldn't be surprised.

And, let me say they are in for the business and not for love of bitcoin just like government doesn't like the decentralised financial system of bitcoin but non of them have choice (both the companies and government). More like if you can't beat them, you join them.

It is for competition, the market world is competitive and business conglomerates have to go with market dynamics and follow customers demands.