I had an idea while browsing obsidian.md. I noticed their pricing page had 3 tiers:

• Personal – \$0 forever
• Catalyst – \$25+ one-time payment
• Commercial – \$50 per user, per year

This made me think. It's an interesting way of pricing open source products. We're seeing a huge shift in consumer spending. The rising middle class (See [[Yi tiao's Interview]])