There is no "probably." It is well-known that people leave their civil servant jobs at regulatory industries, after putting in their time, and bring their know-how and connections to big banks and hedge funds in return for cushy salaries.
Worked in a broker in Australia, our head of compliance is a former ASIC (the Australian regulator) employee.
There is an NPR (National Public Radio) show called "This American Life" and several years back it had an episode devoted to this. They interviewed regulators. The big banks, for instance, will have an office on site for a regulator. The pull is to "go native" at some point.