Yes, the restaurant is not tracking me across the city, and it does not contain malware (although I guess you could get food poisoning).

It would be amorale if these services were not exploiting everyone they can, including the creators.

The better analogy would be, is it okay to walk out on a barber who is spying on your phone, coughing in your face, and won't stop trying to convince you to buy his buddies shampoo or vote for their political party.