Earlier quoted context omitted.
It seems absurd if the 'interference' only directly affects their own property. Like, if my neighbors start monetizing livestreaming my backyard, suddenly I can't put up a fence? Except worse because in actuality, this third-party contract is costing them money through server load and bandwidth.
Your analogy doesn't hold. Your backyard is private property. The data that LinkedIn publishes is intended for the public. That's why Google can index the pages and give you results from LinkedIn.
It does, in the US. You're likely making an inconsistent comparison.
Property ownership has nothing to do with visual access. You cannot legally be barred from casually (involuntarily) perceiving something. It's reasonable to put up physical barriers to reduce what is casually perceived. It's a very good analogy.