So what? He owned the stock, he gets to share in the gains.

If we believed that the only people who should be morally allowed to benefit from asset appreciation are the people who actively work for that company, the entire economy would collapse.

For example, every pension fund, endowment, retirement fund, etc. are all invested in financial assets that they had NO role in. All they do is own something that become more valuable as other people labor and innovate! Shall we cast them as evil capitalists?