Blocking Perftech Injected ISP Messages > How is this not a violation of copyright?

said by Dogfather:

They modify the site owners HTML to inject their javascript execution line then forward the modified HTML to the user (whose browser then renders the HTML along with the freshly injected executes the javascript).

The HTML of site owners like Google is copyrighted and it's a violation of copyright law to modify copyrighted works without permission of the copyright holder, especially for profit.

said by hottboiinnc:

especially when they cache versions of the websites on their own servers all around the world. Google is basically taking from someone. And their actually keeping it until they refresh to save again.