If AM can maintain at least 10% of coin generation in the next 15 years, don't you find it a bit puzzle that a company is worth 10% of the total currency itself (of course, minus coins generated before AM era).
This is why ASIC technology may pose a threat to BTC decentralization, this topic has been thoroughly discussed on these forums. ASICMINER is acting with BTC's best interest at heart by limiting their own share of hashrate, but what if they (or another player) do not do this and a single player reaches +51%?
Logic says that decentralization is necessary for BTC to hold its value, and thus the players would auto-regulate themselves not to destroy their own investment.
Au contraire, history says that greed normally overtakes logic.
I guess only time will tell, if BTC is able to beat the centralization threat posed by private companies developing their own ASIC it will be for sure a great victory.