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I think the rules are there are hard limits unless a multi-trillion dollar company IPOs with a significant absolute float, in which case tracking the "market" obviously includes said company.
A stock index is a business model. The concept of "passive" investing is alluring because you don't have to do any work. However, choosing a proprietor of a index that actually looks out for your well-being is, arguable, always relevant.

We are now at the point where companies can game the system of indexing. Investors need to wake up to this fact and realize this is likely a paradigm shift.

Which multi trillion dollar company are we talking about here?
Yeah, this is correct. There are so many large multi-trillion dollar companies coming to IPO, which if your are passive index holder and you are trying to track the market it is correct for these companies to be included. And besides SPY has chosen not to fast track where QQQ has. It is a free market, and folks are free to NOT buy QQQ. So I'm not sure why this is a point of debate.
"People" in this instance aren't always informed buyers. Sometimes they're buying an index fund because they don't have the time to research individual stocks and sometimes it's their pension investing.

The normal seasoning period is there for a reason. There is a massive downside to premature inclusion of a stock that is initially overvalued and then settles to a reasonable/sustainable value.

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My (non-motivated, don't have NASDAQ or SpaceX) take is that isn't this how these funds are supposed to behave? You buy NASDAQ if you can take risk, S&P otherwise. If you check out what companies are in the NASDAQ, it's not like it's not majority tech, of which a lot of them are AI-based, so adding SpaceX to that mix is reasonable - and if they waited a year or so for price discovery, and had SpaceX been a popular choice (still can turn out like that), then investors would've missed out on those gains.
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