If devs want to add more content and make the game longer (in the actual game and not DLC) than I'm all for it, as I'm sure we all want to get our money's worth. And if that's the case then it seems they respect our money?
I find the real issue is just me trying to control myself and whether I keep to the main story or go off track. This is especially difficult with open world games. With Zelda BOTY I put in +100hrs before getting to the 2nd shrine XD