Comment by andrewlgood

Different markets. Companies are created to allow investors to create profits selling something (things, services, etc). Companies compete with other companies to attract capital. Companies which offer higher expected returns for comparable levels of risk will attract more capital. This reflects supply and demand for capital.

Employees are part of a labor market. Supply and demand in the labor market drives compensation levels. When you have a rare skill that is perceived to be valuable, you can get higher compensation - e.g. Meta AI researchers getting $100M contracts or Juan Soto getting a $750M baseball contract.

As mentioned elsewhere, some companies give stock to employees. In my experience this is for one of two reasons. 1) Employee retention - stock grants tend to have multiyear vesting periods designed to keep the employee at the company. 2) Start up companies that do not have the cash to pay employees.

None of these explanations would lead to simply paying employees more with excess cash (unless the cash was created by a group of employees that you were trying to retain).