In Bitcoin, the network shifted from cpu to gpu to fpga to asic mining. In every stage the shift created a movement toward a more centralized network. The key factor that cut people out at each stage is money, it's more expensive to mine on an asic than a gpu, which is more expensive than a cpu. In protoshares and bitshares, there is no opportunity for centralization through more advanced hardware. However, there is still the opportunity for centralization by means of a central point accumulating more cpus to mine. Do you think this could become a realistic possibility if bitshares or another momentum POW dac becomes large enough?