Because that would put only the smallest of dents in cartel pot profits. Many people aren't in a position to grow their own, or simply want to get their product ready-to-use.
“Because that would put only the smallest of dents in cartel pot profits. Many people aren’t in a position to grow their own, or simply want to get their product ready-to-use.”
Not unlike raising your own cattle to have a hamburger.
Well, probably a little easier than that, but it appears to be a lot more complicated than planting seeds in potting soil.