It's very simple to explain: Ballmer is greedy. He shows it at every opportunity, for example that time when with MS growing as usual he said US technicians and engineers are paid too much (I swear that given impunity I'd headshot everybody saying that engineers should be paid less, but strangely forgetting each time sales and marketing and administration people and other bureaucrats wages) and shortly after he cut some benefits to his employees.
Bill Gates was quite a thug against competitors and even more sloppy than Ballmer with customers regarding quality, but he didn't behave this way towards employees, instead he made them rich.







