The "rich people" have more choices and options. And for many of them going vegan just means telling their chef or whoever makes their meals.
Then you wonder why they all haven't.
This is the problem that I and many other vegans have with Michael Pollen. As an upper middle class white man he's extremely privileged to travel around to grass fed farms and slaughter his own animals. So all of his self indulgent appeals to tradition or nature just enables lower middle class or poor people to keep eating factory farmed meat (well we all can't be like him, they say) OR conversely they are middle to upper middle class themselves, and use his writing as ammunition against vegans about why they don't have to stop eating meat or other animal products. One of the former presidents of Vegan Club at my school was like oh my God The Ominivores Dilemma people are the worst, they will stand there and fight with you. He's enabling people with his outdated, privileged narrative. And he's certainly well off enough to have gone vegan by now. But he inherently believes humans are superior to animals, he's an unapologetic speciesist and said so in an article.
Besides, a sociologist recently did a study that showed that most reducers don't actually reduce their meat and that setting the bar higher to vegan creates more vegans, or at least people conscious enough to legitimately reduce.
Speaking of rich people, Will and Jada Smith bullied their teenaged son into being vegetarian instead of vegan. They bragged about it as an "intervention" because he wasn't "getting enough protein." They probably just refused to buy special food for him and he wasn't getting enough calories. But why? They're obscenely wealthy. Ugh.