Earlier quoted context omitted.
"Investing is heavily biased for favoring large players" How?
Between fixed cost fees, things that are sealed behind an accreditation process, investments that need real person to person negotiation, opportunities that aren't widely published, and even data that isn't shared with anybody that shows up, I'm really surprised that anybody can be even be mildly surprised by that phrase. There is absolutely no investment transaction where it's not obvious that larger players have it…
Fees are so low on index funds that I'm not sure this is really true any more. VTI, the largest broad US stock market ETF, has fees of 3 bp (0.03%). Fidelity even offers some zero fee funds like FZROX (presumably actual expenses are subsidized by other products, though).