jws,
Your are accurate, and expect more of the same. Based on what I have read, right now it appears that foreign markets are paying the profits for Hollywood movies. And foreign markets, based on what I understand, prefer action movies and sequels even more than US audiences, especially it seems the Marvel and other comic heroes.
Unless and until that business design changes, Spider Man IX and Iron Man XXX are in the plans. And they won't change the plots, etc. much lest the masses revolt.