I can recommend "The Triumph of Injustice: How the Rich Dodge Taxes and How to Make Them Pay" by economists Emmanuel Saez and Gabriel Zucman for some concrete ideas on how to fix this problem.
Some ideas seemed a bit unlikely, but overall great refreshing read in my opinion.
Counterpoint here: I travelled for about 8 months about 7 years ago (already? damn!) and it even though it didn't change me directly as a person, it did instill an ever-present hunger to see more of the world. More importantly, it made me marry my foreign travel-partner which has without a doubt been very transformative ;)