Up mass is the ability to take stuff to orbit, so everyone has up mass. Down mass is the ability to return stuff safely from orbit, which turns out to be also very hard. (I think most space stuff is very hard.) Even the countries other than US, Russia, and China, who have launched satellites, have never actually returned anything from orbit. That includes Japan, India, Iran, and I believe even ESA*. SpaceX is exceptional having done it.
* Clarification: I believe ESA (European Space Agency) have returned stuff from probes etc, but they haven't ever taken on cargo in orbit and safely returned that.