My "diatribe" as you put it was an attempt to explain why you will never see the "libertarian movement" you so desire be anything more than a fringe movement. The Libertarian party pretty much kills any chance of that by taking an extreme position on deregulating corporations.
Yes, realistically, some businesses do require more regulation than others. But the problem with Libertarians is that if you really drill into what they believe, you'd be hard pressed to get them to concede that ANY regulation is necessary. What a Libertarian would consider necessary and what an average person would consider necessary are often miles apart.
Often it's worth it to pay for increased regulation. As an example, I'll like to see the government spend a lot more on the regulation of food production, so that people never get sick from eating some product that contains an organism or substance it shouldn't, such as e-coli or salmonella or hepatitis. A typical Libertarian, on the other hand, would probably like to see the FDA and most other federal agencies closed down altogether, maybe because they believe that "the marketplace" would be sufficient to regulate corporations. What they forget is that large corporations can spend whatever they need to in order to counteract any bad press or negative P.R. And it also doesn't work if your only have one choice of supplier, or if all your choices are just as bad.
Basically, when you take the position that you don't want the government to do something because you don't want to pay for it, regardless of how beneficial it might be, you're about halfway to being a Republican. The only difference is that Republicans are more than willing to spend money on things they like, which are typically things that don't benefit 99% of the individuals in this country all that much. And before anybody jumps on me for saying that, I'm not saying the Democrats are angels by any stretch of the imagination, just trying to illustrate how in some ways Libertarians should be thought of as more closely aligned with Republicans than Democrats when it comes to most fiscal issues.