Imagine that I followed you around all day bumping into you, waiting for you to drop some money and then walk away without noticing, so I could pick it up. That's annoying and hostile to you, but profitable to be with sufficient automation. That's the modern commercial web.
The fact of the matter is, people want to be paid for the stuff they create. That's how they're enabled to create more of that stuff. We learned a long, long time ago that people didn't want to outright pay for things. That doesn't leave many options.
They are also (considered as a single or primary channel) a much worse mechanism for actually effectively communicating anything other than emotion (though they can be a useful accompaniment to text.)
Writing an article takes a lot of time
Writing a good one, is not for everybody
But making a video is really easy
I would not say it is really easy for everyone, it would not be easy for me. But it is easy for people accustomed to talk a lot.
