Individuals with high slack are significantly rewarded in other ways outside of group contexts. For example, being self-employed with a flexible schedule means that I get to save a bunch of money by flying on Wednesdays and I can do activities during the week when they are less crowded. Financial slack lowers stress, enables one to take advantage of more opportunities, and take greater risks.
These benefits accrued to those with slack may provide some justification for why it isn’t rewarded as much as one might expect in a group context.
I saw someone tweet a successful report of using LSD for this purpose.
Edit: went back to search for it and there seem to be many people discussing this and quite a few have found it helpful (much moreso for smell than taste, but of course the two are closely related and I believe that loss of smell was a more common experience).