@GeorgeK made an interesting tweet
You can apply this 100% to domains.
Someone will say you paid too much for a prime spot (premium domain) and laugh when they hear what you paid.
Then a few years later a developer comes along and the sky is the limit.
Domains are virtual real estate, hold on to your premium domains and use them to generate leads but the big money will come when the surrounding real estate builds up. In other words when premium one word domains are almost all in use and you're one of the few available. Kind of like this little gas station