Seems to me that Southwest are learning the hard way that not being competitive and transparent with consumers about their pricing is bad for business.

As the other comments said, that's highly doubtful. Also, you have to balance that against the fact that for many people (myself included) Southwest was always the first site I checked, specifically because they "trained" me to know I always had to go to their site, and that for many destinations they were by far the best option for me due to price and flight times, even given their "cattle call" seating.