McDon: You mean like Redguard and Battlespire for Elder Scrolls? Then a certain Todd Howard came with a certain Morrowind.
BadDecissions: ...no? Bethesda never abandoned the Elder Scrolls series, and announced that they were working on Morrowind in 2000, a mere two years after Redguard. You'll have to expand on how you think that's similar to bringing a decade-dead franchise back to life.
Redguard (and Battlespire) failed financially, and they lost money on them. Bethesda were close to bankruptcy when Morrowind was still in pre-production, which is why Zenimax Studios (which now owns Bethesda, id, Arkane Studios) was formed, to attract investors for Bethesda games.
With money comes strings. When Bethesda was an independent studio funding their own games, they were by and large catering to the traditional RPG fanbase. After the ZeniMax buy-out, investors wanted a new focus, namely on removing the complexity of the old TES games in order to bridge out to a larger audience, and also to make the control schemes easier to port to consoles.
Lastly, apart from Todd Howard and top-management suits, the development teams that worked on Daggerfall and Oblivion were different people.