Why do you believe Sony will have the best and most content? I am asking this question because people as yourself tend to believe this but I am not sure why. Sony does not support at this time any cable TV apps. Sony content is sold to the same cable companies and streaming services now. Do people think Sony will stop doing this because that is huge revenue for the company. At best, I can only see Sony matching content.
Sonypictures isn't just James Bond and Spider-man. They have a big amount of a lot of old and new critically acclaimed and succesful series. Combine this with their partnership with Viacom and there older plans of actually becoming a distributor trough the internet and you'll know that they have enough content to get even more content creators supporting there new medium. There service in a package with Netflix and you don't need cable anymore, you'll have instant on-demand and live television.
Viacom + Sony + Netflix + potential other:
Paramount pictures, television (relaunch last year) and animation
Sony pictures (check their movies and shows in history and today like Breaking Bad, the Blacklist and dozens more)
UIP: joint venture of Viacom and Universal
Netflix: can be integrated in the service for extra discounted subscription
+ the potential others and you have one of the biggest networks available worldwide so it seems
Sony can defintely pull it off to start something new.
PS4 will sell 25 million units before 31st of March!
Edit: I didn't state what year! HAHA, so I'm still right in some sense