By Luc Olinga The successful entrepreneur casts doubt over the perception that philanthropy is making a lot of progress. Mark Cuban is sad. And the reason for this sadness can be found in something that may come back into fashion with the hardening of the economic slowdown looming. It’s about philanthropy. The covid-19 pandemic has contributed to the widening of socio-economic inequalities. The gap between the haves and have-nots has grown enormously during the pandemic. The richest 10% of the world population owns 76% of the wealth, according to World Inequality Lab. Global economic inequalit…