Right now speculators are buying mining shares on cex.io. They don't care if they are actually overpaying for their shares because they don't give a shit about the NPV of those shares - all they care about is being able to sell higher than the bought (greater fool theory).
A lot of money is being thrown into Bitcoin mining by people who neither know nor care what they are actually doing.
i understand this much, that there are a lot of people who have interests that simply don't intersect the interests of the bitcoin community, who are involved by proxy in this or other ways. what i don't see, is how that would translate into an interest to sabotage the project.
while the ramifications of their actions might set the stage for that particular pool to sabotage the project, there still needs to be a malicious party to actually carry out the act. what you're saying is perhaps we cannot avoid a 51% situation in the short term because the incentives to prevent this are broken, but if GHash won't try to attack the blockchain, while the pool will become a target for anyone who does, i don't think anything terrible will happen immediately, and hopefully the savvy members of the community will have enough time to orchestrate a reorganization of the mining sector.
even if the obliviousness of speculators involved in cex.io really does result in a tragedy of the commons scenario, the returns are self-limiting. if they threaten the integrity of the whole project, no one profits, and the scheme collapses. i doubt bitcoin will be utterly destroyed, or even close, at this point, and so the worst that could happen would be a short period of blockchain instability that will be resolved after the panic dissolves the mining majority.
that being said, i really do not feel i know enough about the technical side of bitcoin to be sure that my understanding is accurate in this case. do the above arguments sound reasonable? from what i understand, we as a community should be able to handle this with little difficulty.
--arepo