I submit as evidence
a) pretty much every case where a "may issue" permit is required to engage in business (these mostly happen on the state and local level and incentivize corruption).
b) Regulatory capture (e.g. the current FCC).
c) The war on drugs (I can come up with other examples of unnecessarily criminalizing things if needed).
And on the other side, the movies/music/video games/tv rating system sure isn't perfect but it's a great example of an industry coming up with a solution that doesn't involve regulation. Various other professional organizations (ones that are not given special protection via legislation, i.e. not doctors and lawyers) are also good examples. The AWS comes to mind as a pretty good one.
Legislation is hard to get right and harder to change and I'd rather only use it when other options have been exhausted (e.g. I support making ISPs utilities and a public option for healthcare).
Personally I find the knee jerk reaction to legislate whenever anything bad happens quite dogmatic.