If regional parks were
actually subject to a real, competitive markeplace, I would agree with
@Fur Dozy, but unfortunately, in many cases, I think
@warfelg is actually correct. Much like cable or internet providers, many people are locked into a regional monopoly or, if they're lucky, duopoly—but with one of the choices almost always offering a significant and unchangeable geographic advantage. Given the fairly low population density of the vast majority of the United States, there's just no feasible way for competition to effectively keep these businesses in check across the majority of the country.
So what's the solution? Well, we could theoretically, forcibly restructure the regional amusement park industry, socializing them as we do our nature parks and the like—but that's definitely not gonna happen. Maybe there could be some sort of targeted regulations to deal spesifically with abuses that are especially likely or harmful to consumers within this industry—but I'd say the likelihood of something like that is incredibly low as well.
In lieu of dramatic actions like those (which won't occur), I'm pretty doomer about this industry. In market after market across the United States, when a particularly greedy, disinterested, or sloppy park operator gains a regional monopoly, that's that. Due to the incredible costs and risks associated with new park construction—particularly in an already contested market—as a general rule, new parks don't happen—meaning that these shitty parks that everyone hates continue to hold their regional monopoly with general immunity for decades. They have no reason to ever change or improve, because they have a captive audience with no reasonable alternative.
One day, long into the future, population density will start increasing enough to justify additional regional parks for an increasing number of urban areas. Hopefully that future also involves significant transportation speed and cost improvements to allow people to easily travel to neighboring population centers to enable competition in this industry that way as well.
Anyway, in closing, look for my campaign flyers advocating for the socialisation of the amusement industry in your mailboxes soon.