That images taken by hubble aren't used commercially without paying a license fee to NASA? I imagine the tax payer is okay with getting some money back.
NASA stuff isn’t copyrighted, and only the logo is even trademarked.
> NASA content - images, audio, video, and computer files used in the rendition of 3-dimensional models, such as texture maps and polygon data in any format - generally are not copyrighted.
I believe the reasoning is that everything paid for by your tax money should be free for everyone. I think some state-level governments prefer your argument.