Sadly this is a given in 2015 - with your average game budget being over $28 million, there's just no way to recoup that kind of cost through bread n' butter sales alone. More and more developers lean on season passes, monthly DLC offerings or entire sections of their game held back until later down the line - albeit then having a price tag attached. The more enticing the cliffhanger or need on the player's side to know more, the bigger the reason to withhold it purely from a business sense - as say Fallout 3 ended on whether or not the Purifier was going to be activated or not, too many people would've chomped Bethesda's arm off to see what happened - and therein is one of the biggest problems facing modern game design *cough* Mass Effect 3. Of course the general structure of a Fallout campaign leaves less room for this sort of thing when it comes to the main campaign (hopefully), but leave it to the industry to have the gall to charge for things like extra weapons, skins for your companions, armour sets or to put fan-favourite previous characters locked behind paywalls or pre-orders. In the words of Joss Whedon, any business-minded company dealing with any beloved franchise will always "mine the love, and get the money out"
