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.
It is estimated that by 2030 the child-surveillance industry will grow to $500 billion. An industry that capitalizes on bogus fears and causes anxiety in parents and children ( for different reasons ). And an industry that is both directly and indirectly causing the privacy nightmare that we are experiencing. On many levels the industry itself is causing much more damage than good. Here is a short summary of the damages it is causing and how to deal with them.