How can a source on knowledge like TED, thriving conferences that are entertaining and full of knowledge, be unknown by so many people. I mean they have access

How can a source on knowledge like TED, thriving conferences that are entertaining and full of knowledge, be unknown by so many people. I mean they have access on TV to so many brain melting content, but a source of knowledge and idea like TED, is burried on the internet.... What a world !