No Slurpee Machines in Las Vegas?

I'll get to a full trip report in a moment, but first this thought: Why are there no Slurpee places in Las Vegas? Or, at least, not very many. It's 107-degrees (or hotter) here and I can't find a Slurpee hardly anywhere. I found a 7-11 on Tuesday, and I remember there being an Icee place in the basement of Bally's, but in the various shopping areas, food courts, and other hotels on the Strip, Frozen Cokes/Slurpees are nowhere to be found. How can this be given the heat?

My dad and I are convinced that if we opened up a small storefront in each of these hotel food courts, put in 12 Slurpee Machines, made up some collectible souvenir cups, and sold them at $3.00 or $4.00 a pop, we'd make a killing.

Maybe there is some reason why Slurpee's are not easily found, but I've done my share of walking the past three days, and have not been happy with what I've found (or, in this case, have not found).