I'm sure you've seen almost every combination and permutation of startup ideas there is out there, and given the large number of YC funded companies, I wouldn't be surprise if some of those companies happen to pivot to similar ideas and markets.<p>Do you interfere in such cases? How do you deal with that?
Stripe, Balanced and WePay are all moving in the same direction. Also WePay and Crowdtilt were doing similar things at the start but WePay seems to be focused on their API.