You hit on something interesting there. If Groupon delivered great long-term value, they'd have repeat customers. But that wasn't the case. One might then thi

You hit on something interesting there. If Groupon delivered great long-term value, they'd have repeat customers. But that wasn't the case. One might then think "that's fine, I'll just use it once to launch my business" and that could be fine for some time as there's always new businesses being started. However once word got around that it wasn't worth it and didn't drive repeat business, that was the other shoe dropping.