There are much easier places to farm than Antarctica. The sorts of "pioneering" economic activity that later lead to larger-scale habitation are things like mining, fishing, and other forms of resource harvesting. These are all banned in Antarctica due to treaties. These would need to be altered first, and I would not expect that to occur. Greenland, however, is a different story. There's already a long-established population base that does some limited agriculture and is constantly trying to push the boundaries. As temperatures warm, glaciers recede, and new, cold-tolerant crop strains and farming techniques become more established, Greenland will experience orders of magnitude increase in domestic agricultural output and population.