One thing that is a little tangent to what you said: Maybe the government should create a video hosting service. It should host any legal content. There would

One thing that is a little tangent to what you said: Maybe the government should create a video hosting service. It should host any legal content. There would be keyword search, and ability to iterate though all videos but that would be the extent of content discovery. Then other people could use that service as the back end and build content discovery on top of it. It would reduce the big barrier to making your own video streaming service with your desired content discovery algorithms since the government service would handle storage and streaming.