Huh? That doesn't sound like you've done much RE at all. On PC contrary to their Mac counterparts virtually all shareware was PE protected from simple UPX which was often used to just compress the executables to more sophisticated polymorphic code with import obfuscation.
I've been out of the domain for a while but pretty much all shareware licensing was doing interesting things. It was more or less an arms race and a pretty fun one on top of that.
IoT which communicates without your knowledge is one thing but IoT that used alternative encryption because e.g. stock bluetooth was easily sniffable is another. You don't want anyone to be able to just sniff your health monitoring data.
I've been out of the domain for a while but pretty much all shareware licensing was doing interesting things. It was more or less an arms race and a pretty fun one on top of that.
IoT which communicates without your knowledge is one thing but IoT that used alternative encryption because e.g. stock bluetooth was easily sniffable is another. You don't want anyone to be able to just sniff your health monitoring data.