* https://www.gnu.org/philosophy/free-sw.en.html#fs-definition - FSD
* https://www.debian.org/social_contract#guidelines - DFSG
It violates freedom 0 of FSD!
The problem with that is that a lot of non-profit organizations that do use libre software cannot use your software because it violates one of the fundamental requirements of libre software guidelines: No Discrimination Against Fields of Endeavor / The freedom to run the program as you wish, for any purpose (freedom 0). So such software become automatically disqualified for non-profits that want to run themselves on libre software.
I know it is your software and you are totally entitled to release it under any license you want and make money off it. Nothing wrong with it. But I'm hoping you can see why this is a problem for those who want to use libre software who are also entitled to ignore your software and keep looking for something that is actually libre.