A former coworker has a relative who became a CFO at a Colorado dispensary. This was in the early days, and it was the wild-wild-west. Turns out employees were transporting the daily deposits in their car, and the business was storing it in some file cabinets in the office. Obviously not ideal.

So he talked to a couple of armored-car companies about setting up a pickup schedule, and they wouldn't touch the business because they didn't want to take the chance that any dispensary money would get intermingled with regular banking money when in the back of their trucks, and thus invoke the wrath of the feds.

Looking at the pile of cash they had, he just said "Why don't we just buy our own trucks?" and they set up a subsidiary that provides armored car services to the cannabis industry.