If we have such advanced tech, and trip to big planets would seem economically feasible, I think we will be long beyond the point of desperately needing transporting helium to do such crazy trips.
Once we have the tech to cross the world's oceans in luxury, I think we will be long beyond the point of desperately needing to transport oil in ocean liner sized ships to do such crazy trips.
It would be quite expensive to extract it from there, due to the necessity of escaping from their gravitational field, but not impossible.