OP makes so little sense. Developers create base games and DLC, because people buy it, not the other way around. If you don't want to add DLC to the games you've bought, then don't buy that DLC. If you think a game isn't worth the price tag, don't buy the game.

Do not mistake your personal dislike for paid DLC, for an industrywide dislike for paid DLC. Apparently, lots of people love buying additional stuff for their games. It makes perfect sense that developers answer that desire by offering stuff at a price.

Stop buying the latest COD at full price and then five more skins/guns/whatevers, buy better games at better prices. I promise, you're not missing out on much.