This is what separates PoW from PoS. It is much more dynamic system without obvious asymptotes of power saturation.
Obvious? I'm not sure that such an asymptote even exists. Provide more info, pease.
You should watch Hunger Games, it's one heck of a movie, that's the asymptote I refer to.
Centralization remains an issue
That's why PoW provides a 51% mechanism.
It works both ways, any 51% attack can be 51% attacked.
I wonder how much energy has been wasted in this circlejerk of a thread.
You're probably saying that we've had a lot of fun here.
I don't know about you, but I'm mining the heck out of JoyCoin:
https://bitcointalk.org/index.php?topic=905184.0