Since the impact of such an implementation would be greater, it would be harder to pass a law requiring it. This is a more gentle way to censor public debate, w

Since the impact of such an implementation would be greater, it would be harder to pass a law requiring it. This is a more gentle way to censor public debate, while allowing more specialized "research" search engines to continue providing the information to those who could not accept to have it denied. Not to mention how much easier it is to send all requests to a handful of major search providers rather than having to determine who hosts what and hoping they know how to properly deal with such a request.