I've been a software developer in advertising, various startups and have friends in fashion and finance. While sure you can get some interesting insights into their industries, for example Gucci's new operating room spread is dope af, or the fact that hedge funds year over year make 20% on average using their "genius quants" (aka insider trading), I find that the actual people themselves are a relatively homogenous subculture across industries. That is a typically upper middle class white with a BS/BA in econ/finance/cs/communications who got "really drunk" in college, "loves" IPAs now and does sober February's as a challenge.
These are all various shades of yuppie identity non-diverse in thought, culture, or world perspective. They are boring.