It’s unlikely that 30% is reasonable. In the absence of a competitive market we don’t know whether 30% is reasonable but it’s unreasonable (or naive) to suspec

It’s unlikely that 30% is reasonable. In the absence of a competitive market we don’t know whether 30% is reasonable but it’s unreasonable (or naive) to suspect that a closed system has hit on an efficient fee structure, from the end users point of view. More broadly — a competitive market would allow innovation on many many variables, not just different rent-taking numbers.