Re:Space
Space is indeed very big!!! Lots of space, lots of room!
But there are places more privileged tha others:
LEO (becoming crowded with debris).
GEO (becoming crowed with frequencies).
The Moon poles: great places for all kinds of scientific, strategic and commercial reasons, but those areas are really very narrow! It will have to be first come, first served.
L1 and L2: more room there, but it could also one day become crowded.
L4 and L5 ? Well, not before the Moon has been seriously exploited.
There is a lot of room out there, but depending on the mission or the purpose of a flight, limits appear too.
Raoul