Dairy Queen has physical locations, serving that specific location and market. It takes time for the company to do research on specific market segment and why there needs to be a physical location there. It also takes time to build, train, and hire employees in order to service that market.
Groupon: user is only sustainable based on type of deals. business model easily replaceable by any upcoming player.
plus there's so many things going inside the company right now...Groupon's own sales team is suing the company? come on, what does that speak to the company itself? the whole company is made up of salespeople!!