Most are not paid for results, they're paid for time at desk and regular responsibilities such as making commits, delivering status updates, code reviews, etc. - the daily activities of work are monitored more closely than the output. Most ESOP grant such little equity that working harder could never observably drive an increase in its value. Getting a project done faster just means another project to begin sooner.
Naturally workers will begin to prefer the motions of the work they find satisfying more than the result it has for the business's bottom line, from which they're alienated.