How will you save up for the mega ship in a remote part of the Open galaxy? As I understand things it gets quite unpopulated once you get far enough out to avoid other players. From the exploration threads I have read it would seem that the stations don't exist once you get so far out, so no trading. I have been informed that the NPCs thin out and stop appearing so that would negate bounty hunting and piracy. This leaves only exploration as a career path and in order to sell your data don't you need to come back to explored space?
I'm sorry, you are simply wrong. Right now I am on the far side of Empire space exploring uninhabited systems. My base of operations is an Empire system right on the edge of open space. Nearby are 4 systems that supply my base system with the 4 top precious metals. I can make a quarter of a million cr per round trip to these systems collecting these metals and selling them at my base system. It take about 40 mins per round trip tops. I could do this for a day, maybe two and buy and equip an anaconda on the proceeds. I haven't seen another player in any of these systems since release. Doing what I suggested in Open is easy once you find something similar.