Would it have been possible for someone to have bought/acquire like 333,333 bitcoins in march of 2010?
Bitcoin had practically no market value for a long time after its creation, nor could it be easily exchanged for fiat currencies.
It was only towards the end of 2010, about a year and a half to two years after its launch, that the first smaller exchanges and options for trading Bitcoin for dollars or other fiat currencies began to appear.
So, in March 2010, it was probably not possible to exchange fiat for 333,333 bitcoins, as there were no official exchanges or platforms for trading Bitcoin for fiat currencies at that time.