I think a better example of personal growth mindset would be your career. Eventually you'll cap out being a programmer for example. You've mastered the highest paying technology, you've moved to the highest paying location, etc. Your options are to go independent and start your own company, move to a startup with equity, or start cheating people. Cheating people would be to over bill your hours, take on 2-3 jobs and half ass them all, etc. I would argue it's not so much the growth mindset, but the lack of ethics people apply when chasing money once their growth is capped out.
Growth is good, but it will eventually cap out. It's what people do when that happens that really matters.