There is no more clear evidence that video is gravitating toward a managed service model than the fact that the telecom folks are beginning to talk about it in earnest.
Check out the following two blogs that have recently had a post specifically on video as a managed service
Ike Elliot’s Telecosm Blog – “Interview with Envysion” - this is a great blog on the inner workings of telecom from a long time industry insider. Ike is a very talented guy that can go crazy deep on the technology, but also has a good business sense and can see how everything fits together.
MSP Mentor – “The Next Big Managed Service: Video Surveillance” - another good blog on the managed service provider ecosystem. Joe Panettieri has a great insiders perspective on the world of managed service providers and is ahead of the curve in terms of what is going to be important for that category now and in the future.