Also may I add since I just posted this on twitter.
Games have actually gotten cheaper. They haven't inflated in price as much as everything else yet prices to make games keeps rising. You wanna know why DLC is so prevalent? Because companies need to subsidize the cost of spending tens of millions of dollars on Batman and making it look as good as it does. Resident Evil 6 sold upwards of 5 million copies and was still deemed a failure. Tomb Raider sold nearly 3 million copies and was deemed a failure.
In most cases DLC is companies just trying to actually break even on a project. Actually making a profit on a video game if you're name isn't GTA or Halo is actually incredibly difficult for most AAA games. So that is why we are seeing $40 season passes. Because its hard to actually even make money in this industry.