I'm sorry but I really I can't tell if you're being sarcastic or not, but I'll assume that you're not...
> so a few folks will amass a lot of wealth based on luck and not merit
You severely underestimate how concentrated bitcoin ownership is. A couple of hundred people would control a significant proportion of the global economy just because they were lucky. Why would you want some random people controlling the majority of the global economy? I mean things are very far from perfect now in my opinion but at least most billionaires have earned their wealth through actual work in one way or the other and can be generally expected to behave rationally.
The main issue in this case though is that bitcoin is deflationary. Obviously it's flawed but with Fiat money you're forced to either spend or invest your money returning it into the economy (also it's simply not physically feasible to hoard several billion (let alone trillion) of $ i a vault...).
If you don't utilize your money somehow it will lose value continuously due to inflation. Bitcoin on the other hand will increase in value when the economy is growing (which is why using a commodity like gold which is still a magnitude or so so superior to bitcoin in this regard is and was a bad idea unless there are no stable governments). So hoarding money will become the safest and relatively best investment This means that these few folks will remain billionaires for ever and their wealth will keep increasing without them actually doing anything...
There would be no or very few bank loans given out (imagine HUGE INTEREST RATES + HUGE DEFLATION, obviously not something that can exist now as long the people charger are not more than mildly insane...) venture capital, really any investment, which to be fair makes my last point moat cause there would be very little (or like negative) growth anyway in a such an economy.
> I'm just surprised why you think that few nerds becoming billionaires is a major one
So you want to take one of the biggest flaws of the current system and dial it up to 1000? Great idea...