How much of the economy can die before it materially impacts megacap companies?

Is there any actual reason America’s economy can’t be ~100 companies?

Are democracy or private property really even plausible with firms comprising such large %s of the economy?

When everything is TBTF how can traditional free market frameworks make sense?

Is the economy just a game of regulatory capture players vs non regulatory capture players?

As with most instances of me thinking about macro, I end up assuming @NewRiverInvest has better takes and data on this than I ever will.

I am torn between the reality that there are major lags in reality -> impacts -> data/prints vs the absolutely preposterous advantages large incumbents have. Lots of start ups I know are shuttering because they just see no way to attack the market anymore.