Not to mention the fact that the government is one of the only funding sources for blue-sky research nowadays. Pretty much the only surviving research institutions that rival Bell Labs are the national laboratories. Getting to work with insanely bright people at the frontiers of your field (without the funding problems of academia) should be considered a benefit on its own. Also, many of the national labs pay quite well. They don’t use the USG pay scale which is a misconception I see very often in these discussions.