Domain names are about 3% of the "product". You could just as easily make IsDue.by the premier place to buy and sell used parts for vintage Snapper lawnmowers, provided that there was a market for such a service.

Similarly if you invented groupon you could have probably also used the domain fuckmeintheassandrapemydog.com and you'd STILL have midwest housewives DDoSing your servers everyday.

A domain without an idea is just a random collection of letters.