some blame that on the idea of "1€/1$ per play hour" - and when these games come with a price of 60€+ (modern AAA is 80€), they'll get content shoved inside..
I think it's just bad game design that became the norm. I'm pretty sure you can make a game that's received as worthy its price, without overwhelming players like me with the sheer amount of content.
outsourced to people knowing how to do CGI trailers