More of The Same
Most folks don't remember it, but this has all happened before.
The last Apollo flight was the 'handshake in Space' under Nixon. The Apollo program was canceled, the Saturn production capability was scrapped, and it was 6 years until the next manned flight could be done.
It also happened earlier with a gap between Mercury and Gemini, though that one was only a year or two. There was also a similar gap between Gemini and Apollo.
This is not the End of the World. NASA is a research organization. They are really not very good at transportation or longevity in any activity. There should be another group encouraging development and colonization for the Moon. We can't do Mars or the Asteroids yet.
In colonization, which should be our real goal, remember that a colony must be able to be economically self supporting. We can do this soon on the Moon. Mars and the asteroids will take longer.