content: Once upon a time they mostly did, and there are still some holdouts left. It was sometime near the end of, or right after, the first big tech bubble. There was a big change in silicon valley culture then, as it went from being nerds with a high proportion of libertarians, to Ivy Leaguers, MBAs, and their hanger-ons. University indoctrination making it difficult to get a degree without at least pretending to support the hate culture of the left has done the rest.