The virtuous circle of free licenses for open source developers

Companies that use open source libraries and tools should give free licenses for the development of open source projects. Example: I use Jude Community a lot, it is a pretty good program, but some nice features are available only in the Professional version. This UML modeling software is very useful for open source developers that can't afford paying for the professional version. By doing that, the company that develop Jude would start a virtuous circle: 1. open source developers can use the full featured Jude UML modeling; 2. the open source libraries and tools have their quality improved; 3. Jude UML will be able to use higher quality libraries and tools and improve its own quality; 4. open source developer can use a better Jude UML software to develop their libraries and tools...