Are you kidding me, why would someone even proposing that this would NOT keep the stocks down. Of course the threat of reregulation is keeping the stocks donw. The threat of a complete loss of profits, loss of revenue to expand the systems and increase revenue?
Well, Railway Age asked the question, "Is re-reg driving down rail stocks down?".
Sometimes, I'm baffled by the complete disregard of logic, reason, common sense, and the awe inspiring power of stupidity.