the explanation what i heard from some financial analytics is that small float with large valuation would create a dog pile/short squeeze type situation among the funds trying to reflect the SpaceX valuation vs. the whole index valuation - 1.8T vs 70T ratio would be 50B of float vs. 2T where is total of index funds is much larger than 2T, and that is even without accounting for retail investors and other, non-index funds, who will buy a part of float too thus reducing further the float available to the index funds. Such squeeze situation would lead to stock price rise leading to valuation rise, ....

>To people in the financial industry, it's fait accompli.

of course, they've engineered a new way of making even more money. The pile of passive money in ver low expenses index funds obviously have been a fat target for them.

>to reflect the market

the described above squeeze is hardly a way to reflect the market