Microsoft has minted more millionaires among its employees than probably any other company.
I'll let you in on a secret. Regardless of what the official policy is for a company, if you feel you're undervalued, and you're right, you can negotiate the pay you feel you're worth. And if you cannot reach an agreement, there are plenty of other tech companies. In the Seattle area, there's Amazon and Google, for example. You wouldn't even have to move.