what is economic thinking, compared to common sense?
there is a lot of demand for high quality domains
and they tend to be priced higher, because of their quality, their usage potential and the demand for them.
you, cannot expand the number of endusers or buyers for a domain of high quality, unless you lower the price.
you, cannot expand the number of endusers or buyers for a domain of low quality, no matter what you do.
the pool of buyers will only grow as new people want to become domainers or those who to want buy a domain name for development.
and since you can't make anyone buy your domain, then you, can only increase your chances of selling domain names, by having a portfolio of desirable, appealing domains, that potential buyers may seek in the future.