It's simple: supporting a business without getting paid sucks ass. The second a project excludes commercial work they get 100x my attention.
This stance is interesting to me because it reminds me of psychological experiments about utility versus fairness. I'd like to ask you a question in that spirit.
If you could choose one of the following, which would you choose?
1. Noncommercial users gain 3× on some comprehensive metric of useful software with the source available (imagine the metric includes code quality, features, hardware support, choice, etc.), but businesses gain 10×
2. Noncommercial users gain 2×, and businesses gain 2×
3. Noncommercial users gain 1.1×, and businesses gain nothing
4. Noncommercial users gain nothing, and businesses gain nothing
5. Noncommercial users lose 3×, but businesses lose 10×
Edit: Added option 3 and renumbered the options after.