If by "use it against the business" you mean "compete with in a proprietary fashion", yes absolutely. As I said in my parent comment, that is the reason permiss

If by "use it against the business" you mean "compete with in a proprietary fashion", yes absolutely. As I said in my parent comment, that is the reason permissive licenses exist in the first place. There is no reason to choose a permissive license unless this is the behavior that you desire. If that is not the behavior that you want, you should stop choosing permissive licenses and instead choose a license that aligns with your desires. If by "use it against the business" you mean in the literal sense, such as using it to access the businesses systems without authorization, using it to harass company employees, etc. then no, it doesn't really matter if they made the software or not.