That's cool to know. It's definitely not what I expected! I made the assumption a markdown-based tool would primarily be used amongst tech workers for tech-related knowledge. All that being said, the cost for a license is nothing compared to other tools I use daily like JetBrains products.
The overwhelming majority, if the Obsidian message boards are anything to go by.
I wouldn't want to use a product that only now reached v1.0, for a business. It's not Figma, or a Google Docs type app where corporate use cases are very apparent. At best, Obsidian would be good for a knowledgebase, but there are better wiki tools out there for that.
Obsidian does personal knowledge management best, because of its customizability.