One of my kids started going to college in Olympia, Washington in 2016 and this was right around the time when fully licensed cannabis shops could open. In nearby Lacey, Washington there was a main strip with countless cannabis stores. Four months later, 2/3 of them were closed.
Only a fraction of the public is interested in being that high and having one of those shops is not automatically a license to print money.
If you overproduce, you can’t ship it out of state so you’re stuck with it and the price plummets and stores close. And Olympia is pretty far away from a boundary with another state where it’s illegal.