The 15 year test

According to Tim Draper, it takes 15 years to build an overnight success. So one very valuable question is asking “Will this be around in 15 years?” 15 years do sound like a long time from now, but putting this into perspective year by year it actually seems realistic:

Later... Your business will flatten out, suffer from pricing pressure. A cash-cow if you designed it well, but slowing in growth.