50 shades of Grey
The thing about this "escaping from responsibility" thing is that you only ever hear it from the dom/mes... isn't it more likely that the clientele of outspoken dominatrices are high-flying rich men ("hey, we have judges, lawyers and rich businessmen!") because they are the ones that can afford $600 per hour, rather than this is what the occupation causes them to want? I'm not convinced that this sort of "release" thing is anywhere near a proper explanation.
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.
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:
Being a tumbleweed is hardly a "high-power high-responsibility job."