I had a lot of service jobs, including barista, and I feel you. I really think this is, as Boston pointed out, 'More Than a Feeling':
"I’ll always remember feeling like ‘rich people treat everyone else like shit’. That feeling has never left me"
In fairness, there is a small percentage of rich people who understand the world and don't take their wealth for granted. Seems to be about ten percent, roughly the same percentage of deep thinkers in any population.