Ugh, this is just childish. You publish the software under a permissive free license and then make a pikachu confused face when people start using it according

Ugh, this is just childish. You publish the software under a permissive free license and then make a pikachu confused face when people start using it according to the said license. What the hell did you expect would happen? If you wanted to get paid for software, why did you instead tell everyone that it can be used for free? If you want to get paid for maintenance, then why are you doing it for free, instead of setting up some kind of a bug bounty, when you only react after payment? Just add a bot that automatically adds payment link to new Github Issues or whatever you use. If you don't want your software to be used for making money without paying you, then add this explicitly to your LICENSE. It's srsly THAT simple. And don't give me that "evil corporations make money on free software" bullshit. I remember it were the devs themselves who pushed for the use of OSS for their own convenience, back in the day the use of OSS was a hard NO in most enterprise shops, somewhere it's still is. Throwing a tantrum just cuz people use the software the way that YOU explicitly told them to is plain stupid.