It is possible that it'll make some kind of realpolitik sense to stabilize the startup scene, but I sort of doubt it. During the housing crisis, the federal government bought up sufficient stock to stabilize American auto manufacturing not because they particularly cared about the jobs that would be lost or the ecosystem of supporting industries that would be damaged as a result of loss of major manufacturing, but because automanufacturing is one of America's national security concerns... The factories and skill sets that create Ford trucks can create APCs, jeeps, and tanks if a hot War breaks out.

I'm not exactly sure off the top of my head what the similar defense necessity story is for Silicon Valley.