I don't think you've thought this through. You can't _just_ bill the owner a couple of bucks each month. You need a whole infrastructure to do that. You need to plan, design, build, test, deploy, maintain, and provide customer service for an entire new feature of your site. You need to research, test, revise and communicate what the price for storage is going to be (and handle the immediate and ongoing backlash). You need to catrgorize and plan for this new income stream AS WELL AS the costs to get it started and the ongoing costs to maintain it.
That's all just off the top of my head, and all of that is going to be fighting against all the other projects that people want to get done, projects that are likely way more profitable and way closer to the primary goal of the company -- being an intentional streaming service, not an accidental video hosting service.
Pardon, not the storage infrastructure, but the tracking, billing, taxation, customer support, etc. infrastructure.
It's a whole new income stream, which becomes a whole new line of business, and that business requires a variety of infrastructure to support it, especially at a large company.
That's all just off the top of my head, and all of that is going to be fighting against all the other projects that people want to get done, projects that are likely way more profitable and way closer to the primary goal of the company -- being an intentional streaming service, not an accidental video hosting service.