> by using the equipment you commit to providing a small percentage of profits from the job(s)/products/services that wouldn't have happened if the space/equipm

> by using the equipment you commit to providing a small percentage of profits from the job(s)/products/services that wouldn't have happened if the space/equipment/services didn't exist. I can't think of a decent way to calculate or enforce this. If I use a drill press at a makerspace to help build a prototype that I pitch to investors and start up a million dollar business, do I pay the makerspace a portion of my million dollars, a portion of the ~$100 I would have had to spend to get my own drill press, a portion of the $15 I would have had to spend to rent one, or a portion of the scummy feelings I would have gotten from buying one at home depot and returning it when I'm done for no cost to myself? If you just expect people to self-report how much value they feel they derived from the makerspace after the fact, then there's no real "commitment" happening and the whole situation is pretty identical to the current situation of good-will charity. If you don't, then you need some mechanism of reliably determining the outcome of the future given different conditions in the past.