Wealth is tremendously concentrated into just a few countries, yes. Those countries consider that concentration a strength, because it allows them to do things that countries with a lower concentration of wealth cannot even contemplate.
By what definition can it be considered a weakness?
I think parent comment means the concentration of wealth to certain people within a country relative to others within that same country.
That is, already-wealthy VCs are still seizing lucrative opportunities on private markets (as pointed out). It's just the public that isn't able to participate because companies aren't going public.
Not trying to say VCs are holy, but... they are investing, in large portion, the public's money, just in the private marketplace. Pension funds, insurance, family offices, etc., are all active in venture, and that's all "our money" as well.
