This socialist drama of giving the small guy a chance won't work even if we design an algorithm that can run only on a certain brand of gpu , x ram and z hdd space. Somebody with enough money will start assembling exactly this kind of miner with components bought in bulk from the manufacturer, at half the price the usual customer can do it and set up warehouses where he is earning x3 times more than the kid doing so in his bedroom.
exactly
the only reason you have not seen this really happen is that the coins that do PoC(proof of capacity/cpu/components) are coins that are worth very little and have no real merchant real life utility. so its not worth the bother.. however if a coin should become popular then you would see pooling/farming begin.
as said before some of the popular PoS coins are already seeing people pool funds together or use exchanges as their pooled/syndicated stake, leaving the little guys with alittle dust amounts (hobbyists) with no chance
also coins that have no 'acquisition cost' to get fresh coins, EG PoS(requirements is just a signature) also dont have good bottomline 'value' price support. literally if it costs nothing to get the coin people will literally sell it all the way down to a penny and still consider it profitable. so its not just a security of the data that PoW helps. but also the security of the bottomline price supportline as it costs something to make fresh coin people wont just sell it at any price. they will look to sell only above what they paid to get it.