Keep in mind, most of the things I mentioned in my list would fall solely on NASA to take care of, such as maintaining their own facilities, bribing their own employees and other miscellaneous scientific researchers (plus private corporations claiming to offer commercial spaceflight, eg. Virgin), faking the hundreds of space vehicle launches each year, faking the scientific data which allegedly comes from NASA satellites, bribing private companies which offer satellite services (phone, TV, internet, maps) etc. The only reduction in cost which could be explained by other world space agencies is to reduce the amount paid as bribes to foreign governments and people, and only partially supply the ice wall guard stations.
I still don't see how there would be any money left over to make anyone fantastically wealthy, much less any group of people.
Here are some figures for the budgets of foreign space programs:
Russia: 2.4 billion
China: 1.3 billion
Europe: 5.4 billion
All those together aren't even half what the US has allocated for their space programs, and they all have similar costs (launching vehicles, running facilities, bribing employees, etc.) so it is unlikely they would have much left over to aid the US with their own costs.