The world would be a better place if employees were owed something above their agreed upon compensation when their company has extraordinary success, so I choose to believe that they are.
RSUs, stock options - those provide incentive that scales with the company’s success. Just because you’re at Company X that makes billions of dollars and makes one more billion next year does not automatically entitle you to part of that 1b as it’s likely due to work done by employees before you.
Turning it around - would you also take a paycut, or even clawing back bonuses or past income if the company starts losing money?