I think that if cable companies broadcast encrypted signals in through my house, I should legally be able to decrypt them. (But I am pretty sure it is currently illegal to do that.)
I think that if I find a scanner for cell phone conversations and find cell phone conversations that are unencrypted, I should legally be able to listen to them. (But I am pretty sure it is currently illegal to do that.)
I think that if an Apple employee leaves an iPhone 6 in a bar, I should legally be able to break it apart. (But I am pretty sure it is currently illegal to do that.)
It might be ethically wrong for me to do so, but it should be legal for me to do so.
If Monsanto can't keep its products out of a community silo, and Farmer John wants to go fishing for their seeds by spraying them all with a commonly obtained chemical and seeing what survives, I think that should be legal too.