How can you be arrested for giving something away free for private use, that's not available to buy publicly?
This is in a nutshell the paradox. On one hand, if it's not yours, you're not allowed to use it, period. On the other hand, if what you are doing literally cannot hurt anybody, why is it forbidden?
In a way, it's quite close to "If a tree falls in a forest and no one is around to hear it, does it make a sound?"