A thousand times this ^^
If there is any conceivable way to scale mining of a coin and revenues generated by mining outweigh the expenses, then 10/10 times mining power will be consolidated over time. You can pick any coin, any algorithm, any hardware specification, it doesn't matter...if it's profitable and it scales, it'll go in a datacenter. There hasn't been a feasible way around this, since really it's just economics.
I was literally typing up a response that is almost exactly the same as you just posted. No matter what happens, the participation incentive for all these coins is based on profit. When money is involved, companies will find a way no matter what changes are made to continue making a profit.
I keep seeing people say that coins mined with ASICs need to go back to GPU mining. If that happens all the datacenters running ASIC equipment will switch over to GPUs as we have seen with the current flavor of the month ETH. This would also make it easier to bounce around between coins if everything was mined on the same hardware. I also see people saying that transitioning to PoS will help. Problem with that is that profits from PoS are based on the amount of currency you control. So then companies will just buy up the coins and profit that way without the additional hardware/operating costs of running large datacenters.
There is just no way to keep things decentralized when money is involved. People just need to accept that and move on.