These should be useful signals to regulators. Regulation is imperfect but somehow we blame companies that take advantage, either of immature or nonexistent regulation (which might be the case here) or of poorly written regulation (e.g. circa 2000 California energy regulation that let Enron and company run wild).

These companies, in finding essentially arbitrage opportunities, are, perversely, helping strengthen regulation, but only if regulators pay attention to what is going on and do something about it, instead of just watching it happen.