That would be really really hard to pull off for most publishers.
As a simple example: it breaks ad networks, which rely on you having a cookie that is shared across many domains to figure out what ads to show you. That doesn't really work if that 3rd party script is blockd.
As a simple example: it breaks ad networks, which rely on you having a cookie that is shared across many domains to figure out what ads to show you. That doesn't really work if that 3rd party script is blockd.