That’s a very interesting suggestion. It seems like that sort of idea shows true commitment to user-freedom and real, practical longevity for personal use of the tool. I notice that licence also linked to another similar one called the Fair Source License, which nearly replicates what Obsidian currently does with its business model except of course, enables more user-freedom and sets a clear boundary around commercial use. Both of these also seem like they might enable something of the benefits gained by developing free and open source software.
In my case, if I saw Obsidian using either of these, I’d finally be convinced of their sincerity committing to “A second brain, for you, forever.” – and would immediately pay for this.