I did some consulting work for JKH (one of the big 3 from that industry) last year before the whole bankruptcy thing...overseeing their online advertising. There was some kind of deal going on where TaxMasters was going to buy them or merge with them or something...but I'm not sure if that ever happened because I stopped working with them pretty quickly for a number of reasons I won't mention here.
I do remember flying down to their offices in SC, though, and not being particularly impressed with the industry as a whole. Thousands of dollars in charges to people for something they could very easily do themselves, were they not so terrified of confronting their problems head-on. A lot of customers claimed the service was terrible, too, and caused them to miss deadlines...and there were a ton of complaints from people who said they paid a bunch and the company just kept asking for more or threatening to stop the whole process and leave them stuck. Apparently, it was a pretty standard claim against all the companies, though I don't know how much of it was truth and how much of it was people misunderstanding the terms of what they agreed to.
The guys who started the company told us how they did so after ordering some back-of-a-magazine course on how to make lots of money doing it, and they seemed to loathe their customers. For some reason, it always irks me to see companies that don't have at least a minimal culture of respect for their customers.
Ultimately, I ended up refusing to work with them after a few months' time. I don't find this news surprising at all. The entire industry has been plagued with AG problems for quite a while now, and most of the complaints seem pretty valid (not that the customers themselves didn't share some blame).