Yes
I wrote my MA dissertation 2 years on why less regulation helps economies grow, so i know a fair bit which is why i'm against it.
Nightmare... You mean paradise right. A lawless market in which only the strong survive.
Never said anywhere else.
Ok lets say the automotive industry (and everything related to it) was 100% free for all market.
What if the few big auto makers together with the oil companies bought all the gas stations and car maintenance shops. Put very strong DRM into the car, the tank and pumps.
Now you can only take your car for maintenance to an approved shop, only pump gas from an approved dealer etc. Lets say they got into this position by being cheaper/more efficient. But once they get there who is there to stop them from just hiking up the prices as much as they want? What is the average consumer going to do when you literally cannot pump just any gas into your car even if someone tried to compete with that.
What Alphabet and friends have become is basically this but on the internet.
edit: I think the Apple app store and Google store are even worse then this price comparison case though. Both still have a thin vail of "we are not a monopoly" because both iOS and Android exist. But if one of them ever goes away you can be sure for regulation to crack down on the markets.
Point being that free markets work if there is enough competition. Over time in many industries the big players will just start buying the smaller ones and at some point each other. At some point you will end up with 1 to 3 really big ones that don't truly bother to compete with each other and the consumers are going to be on the loosing end of the stick in that case.