Guilds are probably the prime example. Government-enforced cartels established by the industries to keep up prices for centuries.
Oh, I agree. My point is once you set up a powerful regulatory apparatus the companies involved are going to capture it, or at least try to.
You need regulations, and you need regulators. But too much regulation is bad for consumers, because once it reaches a certain complexity only the insiders understand what's going on.
Regulation is rarely a case of being good or bad. Rather, various competing interests have valid points and some arbitration must be found between them. As the old saying goes (paraphrased), politics is about slogans. Governance is about choices.
Political systems exist for political purposes. So what happens over time in a democracy is that regulations that sound good get enacted while regulations that don't sound good are not. In addition, regulations are enacted that sound good even in cases that may not require any regulation at all.
To fix this, politicians use cartoonish slogans -- "all government is bad" or "we need somebody to protect us from corporations"
This response, while great for the political system, does nothing to address the underlying bug in the regulatory system.
What we have some control over, is the process that makes regulation. And a process that makes it easy and convenient, will be easy and convenient for the insiders who work it.
A lot of the time it's just plain bad -- just the result of monetary influence and lobbying for unfair advantages.
And that story is about making it harder to regulate. If regulations are technocratic decisions made according to vague or ever-changing rules, then lots of cosy deals are going to be done.
A lot of anti-competitive law in the US is not "big vs small". Many of the biggies are small vs small or even small vs big - occupational licensing, exclusionary zoning, agricultural laws, lots of state level regulations designed to protect (not very large) incumbents.
Sadly protectionism is a widespread plague that doesn't fit any easy narratives.
It is a disease, and it won't go away until everyone stops playing the game of trying to legislate competitive advantage. Some of the worst complainers about protectionism unfortunately are the biggest players. Example: I remember when Gibson complained about their factories being raided, reportedly for using illegal timber (an environmental regulation that some also view as protectionism courtesy of the Pacific Northwest timber industry). It got a lot of press, but my initial reaction was one of schadenfreude. Because Gibson was notorious for playing their own "protectionism" game courtesy of a lot of dubious patent / copyright lawsuits on various competitors (eg Paul Reed Smith, Warmoth, Elderly), virtual rock band games (Guitar Hero and Rock Band), Paper Jamz guitars, and probably others I can't recall at the time.
I.e. that's a large number of small political donors in your state (highly motivated to donate to your opponents) vs one big corp in another state, plus of course rationally ignorant consumer/voters.
You can go hundreds of years back and companies and businesses were already then busy at pushing through special privileges to keep their profits high.
It isn't a matter of whether you regulate or not, but about the quality of regulation and who it is aimed at regulating. When politics can be bought by power business interests you can bet there will be ever more regulations piled on which don't actually help consumers much.