Would the Ferengi admit to a centralized authority if it existed? Competing nations would probably not accept the concept of privateering, so admission of officially sanctioned status would not protect a captured Daimon they way it protected privateers of yore.
Certainly piracy exists in all the Trek timeframes - but only in ENT is it accepted as part of the game, the way the Barbary Coast was tolerated before the USN finally did something about it, or the Malacca Straits until very recently. In later eras, pirates (or freedom fighters) are hunted prey, and it appears that essentially one has to be a mercenary working for a specific employee on a specific tactical goal, rather than a generalized bane of merchants, in order to make a living like Baran in "Gambit".
Timo Saloniemi