Some general observation about space stuff, no matter what country or space agency... Why its never sold some piece of area of louncher rockets to comercial purpose, to put some comertial, logo of some big company onto surface area of rocket? There are so much space on it, it could be big comertial business, especially for high end missions. Such missions launchings whole world watching either live, or on the news, videos, photos...
Also, why nobody sell rights to companies to show their flag, logo on Mars, Moon, space, space station??? That would be huge business, huge opportunity for further comercialisation of space, also huge earnings for space agencies. That money could cover good portion of missions expences, and allow them to execute more missions, more ambitious, more often...
How could be that even Americans, masters of comertial stuff, never did that?? It cost nothing, and could bring billions of green papers...