cast, your are correct that it takes a big effort, but once again I think you fail to see the changes that have occured in the world. If the moon race were held today, a lot of the software code would be written in India and the rockets would most likely come from Russia (better rockets, by almost any measure). The chips would come from korea, japan and taiwan, and the computers also.
That is the reality of today......fueled by the internet. In other words, Physics - fusion being one big example, was a big reason the internet was invented! CERN is a Swiss (European) physics lab where Tim Bernards-Lee (inventor of the WWW) was working!
http://public.web.cern.ch/Public/Welcome.html
The reason is simple and clear and has nothing to do with either God or Country. It is something I realized in about 1995 after much reading - including "being digital" one of the best texts on the subject.
Here is my take on this "mass intelligence"....using an example:
Pre-Internet
A physics lab in Europe makes a discovery about something that works - one tiny piece of a puzzle.
The knowledge is written into a white paper and submitted to trade journals
The paper is published (maybe or maybe not) and other scientists get to read it adjust their experiments - in other words, they learn from others mistakes or successes.
Time Elapsed: Many Months.....
Post-Internet
The lab makes a similar discovery
The physics community has been following the experiment as it happened
The knowledge is spread instantly to anyone who needs it.
The same thing can revolutionize just about any field of research - especially medicine! Trial and error, which is the way we learn, is speeded up by a factor that is almost too high to measure. If you speculate that thousands of decisions and experiments have to be made (maybe millions) to perfect fusion, you can see the vast difference in time that would be involved.
So. actually, yes - we ARE right now holding hands with smart people around the world and (sort of) singing Kumbaya - and it is vastly better than experimenting within our own caves.