Why would any company promote you and thus pay you more if they already extract nearly double the total work* out of you for the current pay? You are a mostly-r

Why would any company promote you and thus pay you more if they already extract nearly double the total work* out of you for the current pay? You are a mostly-replacable cog in their machine and it's in their best interest to pay you as little as possible for as much effort as possible. Changing jobs isn't running from it. You change into a higher position with both higher responsibility and pay, and therefore move up. Don't ever work extra to 'prove yourself'. All you're proving is that they're able to get more effort out of you for no extra cost.