[jamesskarzynski]

You're right. This is why (as they said in the article) there aren't any massive players in the market. It's viable if you have a few machines in your area that you restock as a hobby, but the minute you add in any sort of overhead, your margins will dry up immediately. Plus, the numbers in the article are actually a little high. 25% margins or less are more common, and generally a single machine will only bring a few hundred or less per month in profit.