I tend to blame shareholders. Here's why most game companies are more concerned about quarterly dividends than putting out good games. If a game is good that is ancillary to profits. I'm not saying that is the only reason that effects development but I do it is definitely a factor
Much to discuss about it, but I think the bigger the studio, the more known their game is, the less likely they are to reinvent the wheel.The games are caused by the development team. Your disappointment is caused by your expectations.