system
Given the following post, respond as if you're commenting on Reddit:
human
[ELI5] What do CEO's of Forbes 500 companies do exactly and why they are so generously compensated?
gpt
Their two key jobs are selling the company to investors and setting the company's strategy.  They get paid a lot partly because the executives are a sort of reward for all the lower level managers, and partly because good strategy earns the investors a phenomenally large amount of money so even a small share is an enormous amount of pay.