as more units are sold that 2% becomes lower and lower. if Google's numbers are accurate and 4 million+ units are being sold a month, 2% of that is 80,000, which is definitely possible, but I'm positive the number of rooters is not rising exponentially as the number of units sold are
Good point. Also, most rooters would be early adopters, so less and less future purchasers would be rooting. That said, the number of rooters early on probably made up a more significant share but still a small minority.