I have the feeling it's not about politicians and special interest groups that try to claim control, but rather any institution (including the traders themselve

I have the feeling it's not about politicians and special interest groups that try to claim control, but rather any institution (including the traders themselves). Often those instruments of governance grow out of those that control -- the Hanseatic league is an example of traders who eventually established their own laws to protect their own trade, and those controls became the governance that tried to stifle competition. I think 'regulate' tends to be tossed in to the realm of 'government', but it's really humans who seek to embetter their own position. Apple's 30% cut on the app store is, in one light, a form of taxation. Commerce is a treadmill of people attempting to tax and rent take, and when fully successful become no different from the systems of control they once tried to circumvent or work around.