I am talking about white collar crime, which tends to be much more black and white than terrorism. And no, the government doesn't have a history of spending millions in trying to chase frivolous cases. Has it happened? Sure. But prosecutors are graded on their closure rate which is why you see so many settlements. The last thing they want is to waste millions on a witch hunt.

You only see the bad. You say "anyone who follows the news" which means you've probably followed a handful of these...out of the millions of cases which get referred to prosecutors: the vast majority are ignored, the remainder are mostly settled, and a small amount end up in court. Government is a necessary evil, but an evil nonetheless. I'm quite libertarian myself, but let's not concoct ridiculous narratives to affirm our views.