Question:
If one has a case of taus where they got an extra item from a business by mistake without paying for it but they don’t who the owner is can you rely on the fact that rov of people are goyim so it is most likely a goy who owns it. The reason for this rov would obviously be so that it becomes a case of taus nachri which is mutar.
Answer:
Correct as long as you didn’t fool him into doing this, especially if you don’t have a way to contact the owner.
Best wishes