Analyze the overproduction of PHDs vs open tenure track jobs. Comparing a tenure job to working at google would be a fair apples to apples comparison.

The situation is not as bad as the liberal arts where being one of the thousands of resumes picked for a tenure track job would be like getting one of the few Nobel prizes in a hard science.

No, not really. They pay about market in Silicon Valley. I believe Apple pays more, for example.