Not only that, but fusion itself is absolutely not what a tech venture capitalist wants to fund. The research horizon for fusion power is in the multiple decades. You're never going to find an investor that says "Yeah, I'll give you enough money to build a fusion reactor and do research for 20+ years in the hopes that you get something workable"

Fusion is literally still in the pure science stage that OP was telling governments to stick too.

This is out of date. There are now a number of fusion energy startups, including Helion which has raised $1B from investors, mostly Silicon Valley ones you've heard of. It's not yet proven that the tech will work, but it is proven that investors are willing to fund it.

The same thing could have been said about AGI 10 years ago.