Most people are slow to adjust to changing times. It's 2017 and those "business" folks who hold domains and hope to cash in, will reality every come into play? Okay, $1000 asking price. In today's world, what is your Google organic traffic looking like? How about Adsense revenue. Oh, Amazon changed (reduced) their payouts. So would anyone thinking that $1000 for a domain makes any sense? Invest a $1000 in that domain and take 2, 3, 4 years to recover those costs, if you're lucky? Even then the downward trend for organic traffic isn't going to go in the other direction.
I know that scalpers don't sell low because they would rather eat it than do that. Places like Sedo are funny. People apparently have little clue about the "business" that once supported these kinds of purchases. Value in domains? Honestly, the ship has sailed. The question is whether the "sellers" will wake up or is being ignorant par for the course? The model of keyword domain, adsense and affiliate earning heaven along with organic traffic stream is as dead a hit (missing the s).
Wake up, Your domains are worthless except to the few ignorant people setting out for the promised land. 90% dead, with 10% of domains that might have some worth. So the question is, will people who sell domains ever wake up?