This software shall not be used on platforms that hinder users in their free choice of software.
This software shall not be used to create or in conjunction with adware, spyware, or other malicious software.
(Perhaps after a lawyer has reworded it properly so people can't pretend to not understand what is meant here)Another one I'd like to see is:
This software is free for personal use, and for commercial use by companies with an annual revenue less than $1B.
(For commercial uses that are not covered by this license, please contact our licensing department)