Probably look up the hardware that is being used at Azure.

so far my best bet is Nvidia (As a proxy to the AI vertical)

These days it's difficult and expensive for a company to go public. So when it's early enough that you could make a good return just going long on this kind of bubble blowing up, there aren't yet companies in the public markets to invest into.

So what happens is that awful companies that happen to be already public will try to reinvent themselves as part of the trend. Some past examples:

- Fish-oil company Zapata happened to own the domain zap.com, so in 1999 they became an Internet portal: https://www.forbes.com/1999/04/13/mu11.html?sh=5d90ad3b65d8

- In 2017 a beverage company called Long Island Iced Tea changed its name to Long Blockchain Corp: https://www.cnbc.com/2017/12/21/long-island-iced-tea-micro-c...

With mostly companies of this quality to pick from, anybody who built an Internet portfolio in 1999 or a blockchain portfolio in 2017 probably lost 99% of their money.