Yes but Randy had pitched MileSpy as a way to "top off" miles. I think that the term top off usually means a few thousand miles, not hundreds of thousands of miles.

There also is the age long debate of whether miles should be earned by flying or by buying. And also think about the inflation effects of large scale buying of miles. If the privileged could buy millions of miles, what effect does that have on those whose mileage totals are in the tens or hundreds of thousands of miles - more comptetion for free flights, more competition for upgrades (and less number of complimentary/elite upgrades), and eventually the airlines increase the number of miles needed for free flights. Infact the last time the airlines upped the number of miles needed for free flights, one of the rationale cited by InsideFlyer was that it was now so much easier to accumulate miles by non-flying.