Buzz killer
The broad issue in selling storage for video surveillance is the incredibly long sales cycle; a lot of deals take 12 -18 months to close and there is a race to the bottom with pricing. Few storage vendors (or their salespeople) have the stomach for that.
On the other hand, what I thought this article was going to go into is how Colorado and other places have codified seed-to-sale video surveillance and multiple months of needing to retain that data. The combination of specific regulations, long retention periods, real audits and compliance checking represent an opportunity not just for storage, but for service assurance, IoT, and other physical security technologies. Video surveillance is often run in very shoddy ways (many reports of less than 70% uptime), so legal weed might be one of the few places where real IT skills and technology are wanted in physical security.