Every company is a software company now (some way better than others, but the point stands). And there aren't nearly enough developers to fill all the jobs. S

Every company is a software company now (some way better than others, but the point stands). And there aren't nearly enough developers to fill all the jobs. So there is a basic supply and demand answer here. Other factors like the importance of very high levels of skill for companies like Google make great developers even more valuable. Which gets you into the six-figure incomes we currently are seeing.