No, it doesn't work that way. One of the other criteria for qualifying as a coffeeshop, is that you obtain a permit from the municipality. Some municipalities simply don't allow any coffeeshops. Coffeeshops also have to be physical stores, and may not advertise.

Also, it's also pretty much at the whim of the public prosecutor whether to close coffeeshops for not upholding the unrealistic 500 gram limit (for the amount of shops in densely populated areas other than Amsterdam).