> Cash transactions require you to make change and are a target for theft. This is neither free nor zero time.

That's why I specified "for the consumer", who is typically the person that is going to make a purchasing decision.

Using crypto for dispensaries has been tried, and it hasn't gained traction in the many years that its been an option. If you introduce friction (by forcing people to transact using a novel payment form), you are going to lose customers. The fact that the very few dispensaries that accept crypto continue to accept cash and debit should tell you what consumers like.