the mobile challenges Microsoft ( MSFT) faces. I have to give the great John Paczkowski of All Things D credit for scoping out the IDC data before I did and writing a strong article around it. He points out that Apple ( AAPL) crushed RIM years ago in the consumer market. And, according to IDC's research, "Apple iOS devices are being brought into the enterprise in droves, both by corporate and employee purchase." In terms of volume, IDC expects iOS to be the number operating system deployed by enterprise by the end of the year. I recall with laughter the debates I had with RIMM bulls last year. They sheepishly ceded failure in the consumer market, but refused to give even a little vis-a-vis the enterprise. Their main point: IT departments would never allow Bring-Your-Own-Device to take hold because of security concerns.