Depending on the specifics of how it works (how much dairy can you move at once and with what force?) it could be a good source of free energy. That is, unless using the superpower takes an equivalent amount of energy, so that our hero would have to eat a lot of food, meaning no free energy...

If the power is strong enough, you could make a ton of money pushing satellites into orbit, or just transporting goods around the world on a cloud of floating cheese.