If bethesda people would actually visit these forums they could explain so much to us... but they can't be bothered to visit these forums, it's not like they need to spend hours on these forums, only a couple of minutes.
Up until (not including) Oblivion, Todd Howard read every single post on the forum. Oblivion brought so many new people that it wasn't doable anymore. They take a lot of opinions of the majority into account. However, they ARE making a new game, and they obviously can't satisfy all the diverse opinions posted here, so participating in the discussion (which already doesn't end) would soon become more time-consuming than developing the game itself. It's pretty understandable, there isn't a single big game studio out there where the employees spend hours on their own forums. It's a job, not something they do for leisure.
Ontopic: I'm pretty disappointed about this as well. Some of the 'excuses' here are valid in the sense that it is common practise for game developers to promise the moon, and it's not by definition such a terrible thing. Most game developers are very ambitious and usually their plans are bigger than what they can realize. But in the past, at least we had demos to see for ourselves (which still gave the developers the chance to make a great demo that featured all of the game's major selling points where the actual game was just flat boring). The disappearance of demos are the worst thing in gaming industry ever imo, and the only one that really keeps nagging at me.
One of the reasons I quit my last job was that our company talked about many features to come that simply weren't in any of the documents, and I, as lead programmer, didn't know about them. Promotional videos showed awesome HUD effects and sound effects that weren't in the game, they were just edited over. Just not fun to have a job where you can never satisfy the customer because your boss always promises more than what's actually there.
Back to the world of no demos, I cannot see those arguments (while not completely invalid in my opinion) as an excuse anymore. I am really disappointed how some parts of this game turned out compared to what was said by the devs. Overall I really like the game, but just like with Oblivion, they removed a lot that I really miss and they didn't deliver on some of the really cool features that definetly felt the detail in which you could role play this game was a lot more than what it turned out to be. I WILL buy TES6 and blame Bethesda again for fooling me for the Nth time, because I do still really like their games and I rather hope than be cynical and miss out on a nice game out of principle. I'm not saying Bethesda is ALL to blame, but it's not exactly a nice thing to do to a loyal fan either, from this loyal fan's point of view. (Pfew, I hope Todd read that)
Edit: nice topic!