Most video building and video editing programs today come with either little or no templates for you to use.
Chances are, you wind up using the same content as most other users (there goes your uniqueness!)
This can hurt your conversions and worse, your branding in the long run.
So if you sell many products, you need more sales videos.
Plus in 2016, you need to do more than just build sales videos - you also need to build pre-sell videos and educational videos. So you need more video objects and elements to make them unique!