Jeez, talk about drama queens (you all know who I'm referring to.)
To keep this as short as possible;
Video games haven't changed in price for 15 years, in fact they've gone down (SNES & Mega Drive games retailed at £50.00).
If you have even the remotest understanding of inflation, you'll understand this equates to an actual decrease in the cost per item per capita. (In simple terms £1 today is £10 yesterday).
Then you also have the increase in price of production, as technology becomes more advanced, it becomes more complicated to create. Gone are the 3 man bedroom teams, hello to the 100+ corporations.
DLC is the cheapest manner to present a game, no packaging, distribution or retailer percentages to consider (bar your channel provider).
In other words, for business sense this is the only way forward, to offer episodic content.
Do you bitch about series 2 of a programme coming out? A sequel to a film? A second book?
Fuck me, PC games have been doing expansions for years.
And one final point, no-one's forcing you to buy this. It's not like they'll release an auto-update banning you from playing the game is it? Whiny little bitches.