I think, 6B. is quite unimpressive, esp. for that of Governments!
This was to take root, in/on that of Mars! There would be no doubt, for this undiscovered Country, that there would, indeed, by that of Nations wishing/and will be planting their Respective Flags/ Yes, a rush for that of the elusive, "Land!"
Also, there would be found a need for "Earth" to continuously be Resupplying that of the populace of Mars - opening the beginning of a trade route
, like that of any time period, to that of Mars.
"Once this Starts to take hold - "Governments, not this "Private Enterprise -thing!" would indeed take over Mars operations and its/the Colonists protection.
Tis' but "Human nature/Anywhere!"
$6-Billion is but quite a paltry sum of money!
If, one can send a One-way mission to that of Mars! Then, I would imaging, the opposite would also be found in being true -in time (Thus a game
of Ping-Pong begins to take form).
This voyage, being found in taking 7 Months, in its duration. Is fraught with one Maine
concern. There is a great deal of floating and passing debris, travelling at a "Very High Velocity!" Unlike, that of Science Fiction, with regards to Star Trek's Shields/This, in being: Enterprise! There would not be found such a thing upon that of a "Modern-day" Shuttle! For which, would be a most unimaginable experience without such form as that as some measure of Protection!