> It will absolutely be untenable to keep Anthropic , OpenAI and SpaceX off the S&P 500 with them also being the highest valued companies on the market.

Following the rules of passive indexes is the whole point.

Mēh! The passive indexes (biased to a momentum strategy, so not really passive - they are too big) may have had their day. The blatantly corrupt move to change the rules was clearly an attempt to game them, and even with out the rule change they will squeeze themselves through the rule gate with financial engineering

This will always be the trend in finance, the powerful manipulate the system to their benefit, the rest of us do what we can to survive....