It works well as long as there is an abundance of people willing to stick around, which is when these people will develop this mindset. With a bit of luck they'

It works well as long as there is an abundance of people willing to stick around, which is when these people will develop this mindset. With a bit of luck they'll grow out of it once the environment no longer makes it beneficial, but many are too far gone by then. It's part of why PUA circles (to stick with the dating example in the article) hammer "abundance mentality" so much. You don't have to deal with a person having a problem with you when, as you say, you can shuffle them out for someone else.