Either they banned the above, or they would pay money for watching them. It is also possible that someone would have an alien on the video, and everyone would be looking, what if they had it? Then to sell to some RenTV.
It should happen that all other videos are banned / removed. Then it will be boring, you will want to watch something and only the video with fireworks will remain
Probably, in order for people to watch such videos, it is necessary that fireworks and concerts, as well as videos, be banned all over the world. People will have to watch video from their phone and remember how it looked.