I'd rather see overly profitable trade routes nerfed and carefully balanced, than see prices raised. Why? Because more homogenous routes spreads the traders out and at the same time makes it take longer for the cashwhores to buy a BS. Adjusting prices upward just because some people found a way to earn $100 mil an hour hurts the traders who actually fly RP-ish routes more than those who should be the real targets.
"To gain a hundred victories in a hundred battles is not the highest excellence;
to subjugate the enemy's army without doing battle is the highest of excellence."