| Use the license to protect your IP, but don't try to accomplish everything with your license. Use terms of service and marketing to get paid. Compelling reasons customers pay: 1. To receive a license key that unlocks paid features 2. To receive support and better documentation 3. To take advantage of cloud features 4. To support future development efforts 5. Access to beta branch (early release) 6. To use a hosted version of the software Wordpress ecosystem is worth looking at. Everything must be GPL and their is a ton of business going on there. Example terms of service [1] (I am not a lawyer and probably used the wrong terms) [1] https://theeventscalendar.com/terms/ |