If I could make written content to compete then why would I be watching said video in the first place? The objective of consumption is to learn, but what you advocate only works if one has already learned something.
What about when the video contains exclusive, important trade-related info? Is dismissing someone to go create their own content on exclusive information really a coherent counterargument (or useful strategy)? Do you really want the internet to be even more polluted with more second- and third-source crap than it already is?
Video is creators stroking their egos. The creator is unimportant, only his/her ideas, which internally manifest as words and should be transcribed as cleanly and accurately as possible. Video is an extremely poor medium for most ideas.
