I just read this excellent article on Pando. The CEO of Postmates, a courier service, allowed one of the investors of Uber to invest in his company. The CEO of Uber gave that investor the okay, and now Uber has launched a competing courier service.
I think it’s obvious that the investor in question likely never cared about his investment in Postmates. Rather, he probably just joined the funding round in order to help gather infomation about Postmates so that Uber could use that info to launch a competing service.
After all, he likely values his stock in Uber much more than his stock in Postmates; Uber is a way bigger company. It would be like an investor who has invested in Dropbox, investing in another company then a few months later Dropbox launches a similar product to that companies; I would see that as foul play, just as in the case of Uber and Postmates.