50 shades of Grey
It could be true, but only in some cases for the reason you suggest. Any "explanation" will necessarily involve gratuitious amounts of intellectual masturbation, as even basic demographic statistics of BDSM practitioners are either non-existent or drawn from extremely biased samples.
There is one easy answer. "it fucking feels good, and that's all that matters". ;-)
All sexual studies draw from one selection bias to the other. Hell, this is why we can't answer the question "what percentage of the population is actually gay?" - and of course, not least because defining "gay" for this purpose is a clusterfuck. Hence why LGBT groups say it's in the range of 10-15% but an ONS survey recently came out with 3%. Fuckin' statistics...
But in any case, here is a complete list of people I know with submissive tendencies and high-power high-responsibility jobs: