I think I understand where you are coming from: even though Trade Mark and copyright are different things I see the link you are drawing.
Trademarking was discussed in the forum at least one other time.. Unsure what the conclusion was but I understood: “it is not worth anybodies time and money to trademark”.
I don’t believe “anyone’s free to copy and use it however you wish” is an option being discussed here. In my humble opinion we would still be asking for attribution and share alike. So if they sell it, the end user can still copy it and share it with their friends for no profit.
Another point I did not mention above. On the Hackspace definition we say we are supporting STEAM. Making things non-commercial to me is like going to school, or uni or hackspace another learning environment and being told: “you can learn this but you cannot use it if later, down the line you plan to use this knowledge to gain some money for your food and housing.” . Maybe this is what I meant with free culture and general hackspace ethos.
I would have imagined the resources could contain things as code snippets for setting up good user management and arduino code for accessing the space. And most hackspaces normally share their code, manuals and designs under a free culture licence with “share alike” clause meaning if we are going to use some of these examples (to not reinvent the wheel) we would need to keep to a similar licence. Or going through the trouble of making sure each part as an adequate licence.