I can't speak for other people.
From my personal perspective, I realize if I were to create or simply share a meme, more people would be prepared to process it and know if it's something they like much sooner. What I do is unexpected, for the most part, or at least I strive for that effect. My craft depends on loyal followers who've been exposed to my style. A meme creator has a template. The context is still to be respected. It's not as easy as it seems to create a clever meme. I respect their craft. Their followers already know how to react so it's easier to gain a larger audience. It's a proven business model, in a sense. It has more to do with the audience than the producer. There are markets in existence and then there are markets one creates. The first meme producer had to go through the same process.

I'm tired. I hope that at least makes a bit of sense.