Great analogy! I hadn't seen that. I can definitely see that in Groupon (which seems much less popular now?)
Although I would also consider the other side of the "sharing economy" -- IMO sharing like Zipcar makes a lot of economic sense, and I don't have a lot of sympathy for incumbents there (although I guess Zipcar got bought).
Likewise with the taxi and hotel industries -- the incumbents deserve some competition / disruption.
