There a two faactors in play here:
1) Our ability to
2) Our willingness to
The answers are simple, yes our government is able to go linux, and no, they are not willing to.
Too much at steak. Microsoft came into the island with flashy lights, photo ops, and the promise of many a investment to come.
Regardless of how true the latter may turn out to be, Paulwell is probably wrongfully betting on it and hoping to fatten his portfolio(as usual)