A limiting factor on salaries is competitiveness. It doesn't matter how much value you produce if somebody else is able and willing to do the same work, of comparable quality, for less pay. And as there has been a huge push to get more people into computer science, over time I expect we'll see compensation for such work begin to decrease, not increase. The only way this would end up being not true is if proportionately more desirable jobs emerge than the push to bring more people into computer science manages to achieve.