Elon Musk, founder of SpaceX, not only wants his company to have a big part in the colonization of Mars-- he personally wants to retire on the Red Planet.
Given Musk's wealth and track record, such a retirement cannot be absolutely ruled out, but it's much more likely that SpaceX will achieve its founder's goal. After all, when the settlement of Mars begins-- and that's really nowhere on the horizon yet-- the first few decades will be demanding and dangerous for the settlers. They will be living on a frontier. Help from Earth, except for communicating with Earth, will be months or years away. The settlement's margin of survival will be extremely thin. Mars will be no place to retire.