Well for starters you need to know Free software
is software whose source code is open.Proprietary software
is software whose code is closed - the developer does not publish the source code.
That's the only difference!
Free software is paid and is free.
Proprietary software can be free or paid.
but suppose I put a person proprietary software but without any activation, showed him where the program contacts the communication with the developer and his contact
The license should be read and unclear.
FOR free? Or paid? The developer prohibits its distribution or not?