The problem is, it's not clear which ones those are. Regulations don't come with labels saying "this is industry-sponsored to protect incumbents", and reasonable people can disagree on whether a barrier-promoting regulation has legitimate reasons.
Sure, there may be some fuzziness here, but there is one clear outlier that should be noted: the 1998 ruling [1] against web radio was a huge one that benefited broadcasters at the expense of online stations.
I'm sure others could get similar things for other markets, but this one was a complete give-away.
