226 Digital Wars Entertainment and Devices, the Courier did computing: address books, maps, pictures. The relentless logic of Microsoft's survival took over. The Courier wasn't running Windows, nor even apparently running Windows Phone, the next-generation phone operating system then in development. If it didn't run Windows, it wouldn't run Office, which would deny Microsoft the profit from the Windows licence and the chance of an Office licence. If it didn't run Windows Phone, it didn't fit into the longer-range scheme for phones. No Windows meant development costs and also lost revenues: on average Microsoft makes $56 of revenue and $40 of profit per PC sold running Windows. If Courier were a hit but subtracted from PC sales, each one would have to generate $40 of profit ­ or it would damage Microsoft's bottom line. Ballmer told Allard he would think about it. Still, he didn't like the idea of Steve Jobs stealing his tablet thunder, and in the week ahead of the announcement he used his spot at the keynote speech of the Consumer