Europe is slowly moving to put part of pensions in the stock market (like USA does). Right now people put it in sp500 so that sweet pension money in eu markets might be interesting to see.
I can't imagine being an American approaching retirement with 45-50% of my pension portfolio in AI-related stocks (that's the current weight of AI companies on the SP500). Besides, when SpaceX/Openai/Anthropic go public, they'll get another hefty chunk.