The importance of Windows on is that you won't be stuck with Intel (overpriced), Amd (lacking in marketing and technological areas), and Via (pretty much limited to low power chips). You also won't be stuck with an Architecture that drains power faster than an ant eater in an Ant hill. We also aren't stuck with an Architecture that has been around since 1975. Arm also brings you chips from almost every company in the world so Qualcomm, Texas Instraments, Nvidia, Apple, Samsung, Telechips, Marvell, IBM, Freescale, etc vs only having Intel, Amd, and Via. In my opinion the future of Chip and architecture design is one like the GNU approach where the Architecture and Processor designs are available free to everyone and the community helps contribute to design and develop of the Architecture and then companies can tweak them a little bit (like companies do now), but put more time and money into manufacturing and marketing chips and spend less time on developing them.