How is that bad news for Obsidian? The creators don’t care that you don’t use their product if you are not willing to pay for it. What a strange way to frame it like Obsidian Dev Team would need to woo you to use their product by giving it to you for free or something like that. Bizarre.
There’s a million note taking applications out there.
Those have commercial licensing requirements as well. The issue is not Obsidian, but your intent on commercial use. Obsidian actually has very generous terms btw: free for education, private use and freelance. Compare that to the license requirement of any other common software you use.