I'm not sure what you are talking about here. Apple's _Cloud Services_ i.e. iCloud, do not prevent Apple accessing the data, and Apple does comply with 'valid'

I'm not sure what you are talking about here. Apple's _Cloud Services_ i.e. iCloud, do not prevent Apple accessing the data, and Apple does comply with 'valid' requests for that data, just like Google and Facebook. As for data stored on user's devices, Google also ships their phones with full disk encryption which Google cannot bypass - the implementation isn't as good as Apple's, but the concept is the same. Facebook doesn't sell any end-user devices so I'm not sure why they are even in your comparison.