Enoki
SOC-14 1K
For a Traveller setting, you have a class of nobility running the 3I. I take that to mean they pretty much get a cut of whatever anybody outside the nobility is doing. So, you're the baron or viscount or whatever running planet A. It might be a backwater, but you still run it. Some local starts making something and some mega corp suits show up and drop a pile of cash on your desk saying they don't like what the local is doing.Sure, that’s one way to do it. And still would be done in the US without laws prohibiting anticompetitive practices. Market capitalism isn’t accidental.
Another is guild type stuff. It depends on the culture and laws, and of course such variables as size of empire and impinging competitive polities including naval strength backing how business is done.
You make damn sure Mr. Local stops doing whatever it is he's doing. Toss in guilds, unions, trade groups, and other interests, and pretty quick things can get ugly if you're an upstart working outside the system.