When she doesn't declare herself free from Amazon leadership responsibilities with the SEC nor divests her ownership shares, while sitting on the board of directors as your new boss who you just happened to cheat on.

This isn't just about losing $70 billion. He could lose his company. To these guys, its not about money. It's about super control freak levels of power. If it was just about money, he would have bailed after a few billion made and rode off into the sunset. As it stands, he could very well find himself out of Amazon if she doesn't play ball. My guess? He cares.