They won because they allow managers to be in control and authoritarians. I've seen more than 2 managers who take over JIRA and lock down permissions and create custom workflows and all of them insist on having swim lanes and 5+ columns. So to move one little ticket across the board took 4+ drags. If you have a heavy-weight process where people are actually signing off on things, then yes it makes sense. But otherwise it just irritates everyone.

They won because they appealed to the true buyer in the office; the CTO or VP of engineering, but they really appeal to the control-freak and micro-manager.

When I used Fogbugz in one office, it was the devs that pushed for its use and the project managers and other execs weren't able to screw it up; there was no obvious way of creating custom workflows or locking things down too much. Fogbugz let us get work done. JIRA in the hands of a micromanager makes me want to chew glass.