As far as the vast array of software goes, isn't it all going to have to be rebuilt for the new platforms (ARM etc) anyway? And if you want people to develop fo

As far as the vast array of software goes, isn't it all going to have to be rebuilt for the new platforms (ARM etc) anyway? And if you want people to develop for Metro they're going to have to develop for that rather than just offering the same old software. I really don't see the advantage MS is supposed to have here.