It’s not a matter of working harder. The 40-hour work week vs capital gains and the ability to leverage one’s wealth at multiples is not comparable. The ability to hide earnings and lower tax expenditures clearly favours the very wealthy.
We have created a system that burdens the middle classes and gives the corporations/top 1% benefits that they do not deserve. The earnings for shareholders trumps all humanity and the incentive to invest in jobs/infrastructure has been reduced to near zero.
Why spend any of your under-taxed profits when you can hide it off-shore?