I don't think so. Apple are most likely wanting to concentrate on their core competency (making the iCloud product) and not have to worry about (more) data cen

I don't think so. Apple are most likely wanting to concentrate on their core competency (making the iCloud product) and not have to worry about (more) data centers/storage/etc to support the product. As others mentioned it sounds like a good win for both parties; Apple get to concentrate on the product directly, Microsoft get to concentrate on their code competency (providing the hosting).