From the BCS, Berners-Lee ‘wary’ of all web tracking:

Mr Berners-Lee explained that this type of targeting could lead to information about a user’s habits getting into the hands of unwanted parties and that instead, ISPs should have to comply with the same rules and regulations that any other utility company would.
…
Mr Berners-Lee said a user’s internet activity information was akin to a person’s private property, however.
“It’s mine – you can’t have it. If you want to use [that data] for something, then you have to negotiate with me. I have to agree, I have to understand what I’m getting in return,” he said.