So what? You are assuming that “the best team possible” is a desired end. Maybe it isn’t. In fact, what your marketing people will probably tell you is that you’ll sell more tickets and ad spots if you field consistent down-to-the-wire games. A league with only two really competitive teams would get pretty boring over time. Of course, there are also niches in which the consumers in that particular market may like it that way. Professional golf, for example, is a sport where the ultimate consumer tends to like seeing the same big, well-funded names win over and over.
Only control-freak social engineers who assume there is some gnostic, ultimate “end” that must be obtained regardless of any business consideration worry about this sort of thing.
I have no experience of sports like baseball, soccer, basketball and so but I have lots of experience in motorsports.
You may be shocked to learn that the ones constantly pressuring for cost-cutting measures and more restrictive rules are the biggest players in the field, the factory-backed teams and the ones with budgets four to five teams the privateers’. To cut a very long story short they know very well what they are doing, they know that performance improvements with tighter rules tend to become unbelievably expensive and hence will consolidate their dominance and they know that teams “thinking outside the box” will be penalized and perhaps forced to retire. You are a smart lot so I don’t need to tell you that sports is simply politics wearing a more attractive apparel.