> I think we'd see sites implement some sort of check to see if their ad scripts loaded properly, and ad/analytic providers enabling this through hooks.

NoScript's surrogate scripts are the user's side of this arms race. I think it should be clear that the advertisers can only have as much success as any other DRM provider that relies solely on obfuscation while still trusting the client. Surrogate scripts can be updated more quickly than the multitude of web sites that need to verify that an ad was shown.