What would happen if everyone did it? If everyone gave their wealth away what would we do for capital? If everyone loved their enemies who would ward off the Communists? This argument could be met on other levels, but here our only point is to observe that such reasoning would have been preposterous in the early church and remains ludicrous whenever committed Christians accept realistically their minority status. Far more fitting than "What if everybody did it" would be its inverse, "What if nobody else acted like a Christian, but we did?"