The main incentive for maintainers of open source software is to see many happy users of this software. Most open source maintainers do not care about monetizing their products (or the monetization has very low priority).
That's why most open source maintainers use truly open-source licenses for their software - BSD, MIT, Apache2, and they will be happy if Amazon, Google or Microsoft builds successful product on top of their open-source software, since this gives them the desired recognition.
That's why most open source maintainers use truly open-source licenses for their software - BSD, MIT, Apache2, and they will be happy if Amazon, Google or Microsoft builds successful product on top of their open-source software, since this gives them the desired recognition.