The problem you are highlighting is that a system like many here want requires wall to wall adoption.

There aren't very many fmri engineers, heart surgeons, etc.

What if one of them decides to start offering their services at a "market rate" rather than benevolently assisting their neighboring communities freely?

Then what happens if one community happens to have access to resources that person wants, and the others don't?

Is the fmri engineer compelled by force to assist everyone and share their knowledge? Obviously impossible.