NASA has always been dependent on commercial for profit entities as contractors. The Space Shuttle was developed by Rockwell International (which was later acquired by Boeing). The Apollo Program relied heavily on Boeing, Douglas Aircraft (which later merged into McDonnell Douglas, and then merged with Boeing), and North American Aviation (which later became Rockwell and was acquired by Boeing), and IBM. Lots of cutting edge stuff in that era happened from government contracts throwing money at private corporations.

That's the whole military industrial complex Eisenhower was talking about.

The only difference with today is that space companies have other customers to choose from, not just NASA (or the Air Force/Space Force).