If Skyrim is a result of Bethesda's doing "all they can" then I guess they're just bad at making videogames.
What's funny is that every so often you see people posting things like, "There are too many computers out there with different equipment in them, so it's near impossible to get a good working game," or similar statements.
My reply to that erroneous statement is, that Blizzard sold more copies across 3 different genres, and upward of 11-12 million of WoW alone, and their player base doesn't seem to have as many problems as Bethesda does. Not saying they don't have their problems, but after 5 years of playing WoW, I have to say there was a lot less complaining.
The way I see it, is that Bethesda developed a successful formula for a game/genre a number of years ago, and has stuck with it since then. I think the word was 7 million copies of Sky sold in the first 3 weeks. Why screw with success, damn the end result.
It's still all about the money.