Splitting is a psychological phenomenon. It’s the failure to observe and bring together the dichotomy of positive and negative qualities in self and in others. Simply put, it’s the tendency to see people as all good or all bad. It’s commonly known as black or white thinking.
This concept is so obvious when stated this way. People apply this thinking not only to individuals but also to billionaires as a class. Billionaires are evil people who gain by exploiting other, or billionaires are the saviour of the world with their innovations. We also fail to distinguish making money through the obvious explotation of others (in zero sum games) and making money as a percentage of true value added to the world (non zero sum games were all are enriched). I do not begrudge someone a vast fortune if they earn it giving something to the world that (I agree :-) it badly needs.
I am, for example, all for new climate mitigation billionaires if they have can drive the change it seems we need.