It would cost a lot more, price would get pushed far beyond $3 as you're scooping up that many DRK.
Not sure if that many DRK are available to purchase either...
Likely yeah, but what is to say they do not already run them just like with TOR? Masses of DRK was traded in the previous weeks/months and it would not exactly be difficult to buy 50,000 to 100,000 DRK .... We are talking small change here v.s. breaking encryption algos.