I'm not sure what your point is. Your initial comment seemed to indicate that you thought Github was increasing their pricing because they were struggling to pay for the underlying infrastructure, or that the per-customer cost was too high for the current margins. This is almost certainly not the case, they have simply realized that compared to similar services they are leaving a staggering amount of money on the table, and that people will pay a lot more. I imagine this pricing change will substantially improve their business in all regards.