It depends.
There really is far too much economic advantage in ComSats, weather sats, etc., etc., for those not to happen. At least with a PoD that late.
However MANNED (crewed, if you will) spaceflight is almost purely a prestige project, and produces little science and most of that is related to Man-in-space (effects of zero g on health, and so on - which has little application if you don't have crewed spaceflight.)
Have Kennedy not issue the lunar landing challenge, and (crewed) spaceflight is reduced to intermittently staffed space stations that don't justify the expense invested, so both sides eventually just drop them.
And, if anyone points out the shuttle servicing of Hubble as a counter example, well, you could have launched a SECOND Hubble for the cost of those servicing missions.