I think he's right, for the most part. It's also interesting that a lot of these startups end up with "successful" exits where their technology isn't used at all (ie talent acquisition for FB/Goog, etc). I don't know if there should be a correction for that, but I sometimes feel that it leads to people building for the sake of building until they get acquired.
Interestingly, we (http://feefighters.com) had 2 of our 4 interns leave us in the past week because they got accepted to YC (2 different projects). I guess we should feel good because we're picking smart people who want to work for us, but we'd rather have them with us!
Even if the product isn't used on many occasions, the best aspects of it and the teachings from running it often are. I think the aquihires allow experimentation that would be hard to achieve within the acquiring company.
The aspect I dislike is when startups say that they are in for the long haul then sell a few months later. Makes it hard to trust a startup that the investment in time you spend to get up and running on their product will be worth it.
Interestingly, we (http://feefighters.com) had 2 of our 4 interns leave us in the past week because they got accepted to YC (2 different projects). I guess we should feel good because we're picking smart people who want to work for us, but we'd rather have them with us!