Bethesda has a lot of potential - really, they have (see, I can say something positive about Bethesda) - but as they are stuck with their one design concept, they end in remaking the one single game over and over again. They are a one trick pony and even some smaller and less skilled studios blow them out of the water when it comes to diversity and innovation, and when people finally get tired of their inane and repetitive design goals, they will go down fast (unless they straighten up and do try something even subtly different) as you can only do "that one thing" for so long.
The 'sad but true' part of this is that IMO they are not; rather it is that this works and makes them heinous profit ~which is good for a company to do. I've no doubts that if the formula failed to continue working for them, that they could not come up with another design. I do think that in the impossible event that industry wide consumer demand went totally in favor of retro RPGs, and became FPP hostile, that they would
first release a Fallout modeled after the series; after the original.
(And that would probably be 'worst case' from their perspective)