Then shouldn't a decent candidate have been able to do better than Trump in the GOP? Again, the problem isn't the system in this case, it's that Fox News and the GOP created a monster they can't control. Your comment seems like an excuse to stick in a "smh this system" with no relation to this news.
Meanwhile, the fallout from this may result in the GOP having to seriously rebrand in the next four years (like they did in the past), which is basically the same as allowing a new party to be on the national stage.