Every Elite game has been about the trade grind. Yes combat (piracy, bounty hunting, whatever) may be more enjoyable, but the need to trade to generate the big cash still underpins everything.
In the second and third games you ground up the ship ladder, with each step up providing an exponential increase in wealth, so by the time you had an Anaconda, or Panther, you were just printing money. And every time I played, I eventually got bored of the big ships and the trade runs, sold up, bought an Asp or Imperial Courier, then buggered off to sight see. I don't see my behaviour in E: D being any different.
You've got the choice - be the entrepreneur and become the Richard Branson of the spaceways, or go the combat route, though, like the real world I'd imagine the average age and wealth of the entrepreneur is going to greater than the average age and wealth of your average mercenary.