PS4 will make $1.2bn each year from PS Plus, analyst estimates

[I LOVE GIGGS]

In my opinion, $4.7b is too low. I'd say at least $6.0b, which is 28% more than what they estimated.
If we assumed that 25m subscribed for last year, that's $1.5b on last year alone.
Note: $4.7b/$55 = ~85.5m subscribers in 8 years.