Internet speeds will need to be much faster (like download 25GB in 1 hour) and storage space will need to be 2TB at least. But considering storage space started at 20GB last gen (smallest HDD on PS3 and 360) and got all the way to 500GB, it is possible that by the end of this gen HDD size might increase by 10x, so we might have a 5TB sku Xb one and PS4 before the next gen starts. If I can get 20 25GB games on my hard drive before I have to start managing the content of my HDD then I think that will be OK to go more or less all digital.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
