Wozniak is probably the most famous example. He recognized the corrupting nature of money, decided he had enough, and stopped to live in comfort and occasionally work towards causes he finds important
Lots of people have done the same... But if they're rich and still chasing after money? They'll never stop
There are people basically immune to caffeine. There are extreme caffeine addicts. I can drink two pots myself, and I'm extremely sensitive to caffeine
The metaphor works because it doesn't matter how much coffee you drink - it matters how fast you drink it. And that's a limit set by the business - the size of the cups and how quickly they're refilled
At this point, I feel like you're not even trying to understand what I'm saying...