This is a monstrous misassumption by Plain. For instance when I was trying to work with Bitcoin chain data, I would be looking at close to 1TB worth of data that I needed each time to replicate the complete application and the bill was something like $500 just to keep it in EBS.
So with 10 developers, we would be essentially paying somebody's salary and I wonder if the problems listed in this article is so critical that it would be worth that much.