The problem with Bethesda was they released 2 imsism in 2 years.
These games take time to get through, and (for me, at least), once I've played one to completion and exhausted the possibilities of how I wanted to mess with it, I need a change of genre, a "palate cleanser" , if you will.
DXMD was an amazing game that got completely screwed over by every terrible marketing decision Squeeenix could come up with- from the bizarr pre-order campaign (if we reach X number of pre-orders, we'll release the game early! Customize your pre-order package like it's a kickstarter!); to chopping up in-game missions as pre-order bonus, to selling one-une use booster items, to the bizarre multi-player mode filled with micro-transactions, whose relevance to the story isn't explained until the first DLC. The publisher clearly had no faith in the game, so they decided to milk the players in every single way they could think of--and this attracted middling review scores.
With Cyberpunk, Bloodlines 2, Dying Light 2 and the 2 System Shock games nearing completion, there's hope for imsism to make a comeback; I don't know about Arcane, though. We still don't know what kind of experience DeathLoop is, and whether it'll work as a single-player game; and with Human Head now part of Zenimax, it'd be an ultimate "dream game" PR coup for Bethesda to announce that the space bounty hunter game is coming back- though it probably wouldn't be part of the nu-Prey canon/universe, since nu-Prey is basically Arcane's take on System Shock. Human Head/Roundhouse is also one of the few studios familiar with idTech (which is why Zenimax wanted them in the first place), so any shooter they'd be making would probably go back to that engine, making it very distinct from Started or anything else Bethesda Game Studios cooks up in the Gamebryo/Creation.