Real world scenario shows the same trend.
Just look at maize farming or milk farms. The Big guys are buying out the smaller farms, because the smaller farms, cannot farm profitably.
Other factors, like Big farmers, forking out for the best and most effective equipment, make their farms profitable.
Small profit margins and increase cost in energy, push farmers to sell their farms to the big guys.
Only thing, helping smaller farmers, are when governments subsidize smaller farmers with tax money.
It's going to happen with crypto mining too. Smaller "coin farmers" will have to buy hash power, from the big farmers, to be able to mine.
And investors, will follow the money, and invest in "big coin farmers" making them even stronger.
Only thing in my opinion, will be if ASIC technology becomes cheap enough, for everyone to mine. {Eg. Home users plug a USB memory stick, in their pc, and they mine coins, to pay for the electricity they use} In that way, the "big coin farmers" will have a huge amount of "smaller coin farmers" to compete with.
But that would push the price, of these "USB memory sticks" up, due to demand, and it will not become affordable, nor profitable.
