Well, they did it. Your players went head-to-head against an antagonist with Superb Resources, and instead of taking critical social damage and retiring from adventuring, they took him for all he's worth. "Nice to have you as an investor for the quest. We want riverboats, and guards, those wizard experts we met, cash for bribes, could you polish my armor? Oh and a barrel of olives that the Mercenary likes..."
The fiction demanded an outcome like this, and I went with it. But I've never run a scenario where the characters get this much dosh --- and certainly not in Fate. How do you still put your characters through the wringer when they've won a Superb contingent of lackeys and equipment, without doing something cheap like sinking the boat right out of the harbor?
I'd call the genre "Low High Fantasy": the fate of the world hangs in the balance as curséd weather rains literal blood on the land, there are tricky faeries and murderous elves and bizarre forest fauna, however my players are variously drunks, past their prime, or on their very first outing from their castle.