A Vendor Lock-In is when certain software is developed to be incompatible by design with other software that have similar functionality. It is used to establish a monopoly. And any such function is malicious.
This comment thread is for people to document various implementations of this malicious feature.
I know that philosophy is not a science. Because it is about what we cannot know, as some smart people out there say. But I've got here a philosophical theory which I want you to debunk. The theory is something I truly believe in, and therefor I'm biased towards it. So I suppose you could be better at debunking it, since you are not me.