Why won't PoW last long?
When all the mining power becomes concentrated in 2-3 large mining corporations, which is inevitable given how the process unfolds, how is this different from centralized money printing by central banks? PoW will last another year or two before that happens. When only 2-3 large corporations control processing of all transactions, they will be regulated and dependant on regulators' decisions and rules, and this becomes the same as any fiat currency, except this currency is produced by solving blocks, but it will be far from the idea of decentralization that crypto currency came up with.
I see where you're coming from, but central banks have been around for many years and I'm still alive ... certainly many more years than "another year or two" .. hopefully
. PoW at worst invites central banks to assume power .. by taking control of most mining resources. PoS at worst makes the original stakeholders a new "central banK" whether or not they were one before, where they're still susceptable by flat out purchasing by a centralized banking system. It's little more than clenching your cheeks and hoping for the best .. anything else is speculation. I think I like both attempts.
PoW gives me the hope that there's a control based on some physical link to the real world, and PoS gives me the hope that maybe someone can do better than a centralized bank. Both seem like a lottery increasing my overall chances to win.
I've seen some interesting proposals involving both PoW and PoS that catch my interest .. MC2 being one of them. Any thoughts on that? I think I remember you favoring NXT, but what do you think of hybrid currencies?