No, it's about value.

Money is just a convenient abstraction of time and energy. Basically everyone, all the time, is focused on min-maxing their time and energy (optimally is another question, hah). These are both fundamentally scarce things and likewise have intrinsic value to everyone.

If you spend time reading an article or watching a YouTube video, it defacto has value to you, and the creator of it spent both time and energy making it. And just like that, there is a market.