Bonuses. Usually there is no penalty for failed referrals, so the more people they refer, the more likely someone gets hired and sticks around long enough for the bonus.
And then there's the plot twist. On-label use is for type 2 diabetes, which is considered a consequence of obesity. So it's actually about prevention vs treatment.
Started playing Mass Effect with Knights of the Old Republic fresh in my mind back in the day. It was so jarring hearing the same voices with different characters.
Only 72k for me, but there was a time for several years where I wasn't listening to any music on my computer. Something that working from home has seriously changed :D