I had my brother printer do this to me. I had been using a 3rd party toner cartridge and it just stopped working one day. Luckily I was able to remove the DRM

I had my brother printer do this to me. I had been using a 3rd party toner cartridge and it just stopped working one day. Luckily I was able to remove the DRM chip off of the expended starter cartridge that I hadn't yet thrown out and swap it into the 3rd party toner cartridge which got it working again. I'm honestly confused at how they were able to do this. I'm pretty sure that several years ago HP lost a class action lawsuit about exactly this kind of behavior. I'd have thought that, having another company lose that lawsuit, there'd be a lawyer just waiting to jump on this. Is brother just too small market share to attract a class action lawsuit over?