For fun I asked Bard (google ai) why are sumo videos being taken down
Sumo videos are being taken down because of copyright infringement. The Japanese Broadcasting Corporation (NHK) owns the copyright to most sumo footage, and they have been cracking down on unauthorized use of their content. This has led to a number of sumo channels being shut down, including Natto Sumo's channel and Jason's All-Sumo Channel.
NHK has argued that they need to protect their copyright in order to maintain the integrity of the sumo sport. They have also said that they are trying to make it easier for fans to watch sumo online by providing their own streaming service. However, many fans have criticized NHK for their actions, saying that they are making it difficult for people to enjoy sumo outside of Japan.
Some fans have taken matters into their own hands by downloading and archiving sumo videos. This has helped to preserve some of the footage that has been taken down, but it is not a sustainable solution. The best way to ensure that sumo videos are available to everyone is for NHK and the JSA to work together to create a more accessible way to watch sumo online.