Earlier quoted context omitted.
If HTTP was a contract whereby you agreed to look at everything that was sent over then your analogy would make sense. But HTTP is a protocol, not a legally binding contract. So no.
The terms of service for the site that's delivered to you over HTTP, though--that is a legally binding contract. Some have no-ad-blocking terms.
X-You-Owe-Me-If-You-Send-Content-In-Response-To-This-Request: $1,000,000,000
I'm going to be rich, rich, rich!!!!