Well the biggest difference is most of the big foundation labs (OpenAI, Anthropic, xAI) are private companies, so it's not like you have to go out of your way to not hold any equity. This wasn't the case with Enron which was part of the SP500 and thus included in many passive funds.

You could say there's spillover with Nvidia and the clouds and such, but that still makes this a different case than Enron. It could be like the dotcom bubble, but bubbles != fraud.