If these (or other similar) experiments would show viability of this network architecture, the cost could be decreased a lot with development of even more specialized hardware.
Also one could look at the cost of the custom development of bots and AIs using other more specialized techniques: sure, it might require more processing power to train this network, but it will not require as much specialized human interaction to adapt this network to a different task. In which case, the human labor cost is decreased significantly, even if initial processing costs are higher. So in a way you guys do actually optimize cost efficiency.
Also one could look at the cost of the custom development of bots and AIs using other more specialized techniques: sure, it might require more processing power to train this network, but it will not require as much specialized human interaction to adapt this network to a different task. In which case, the human labor cost is decreased significantly, even if initial processing costs are higher. So in a way you guys do actually optimize cost efficiency.