I think we'd see more "private cloud" usage; put a secure box in your house with all your data you want to access elsewhere, give photo/video links or hashes or decryption keys or whatever to your family and friends, etc.
Looking to the broadband wonderland in South Korea of Japan w/Gig service for $25 provides some insight into the sevices/uses of that sort of broadband -- based on my experience it fundamentally changes your computing practices.
