I have an unpublished blog post on this very subject so I've done a bit of research into the matter. I first thought Pinterst was the first one to extend the e

I have an unpublished blog post on this very subject so I've done a bit of research into the matter. I first thought Pinterst was the first one to extend the exercise period to a great length, but I discovered that it was in fact Quora who was first. They have a 10 year exercise period. Pinterest was followed by Coinbase. First time founders will have a hard time rocking he boat because of the great fear of not being able to raise capital. Thus it's really on the shoulders of the late stage companies and repeat founders to lead the way.