One things System Shock 1 could never be accused of: hand holding.
Unlike half the world (apparently), I don't think System Shock and Bioshock should be in the same sentence together, much less considered spiritually related to each other, except in the sense that System Shock should be considered related to pretty much every game that was influenced by it, which is to say pretty much every game that came after.
Didn't care much for Bioshock either. ..Oh, decent enough storytelling but didn't really move me; thegameplay really just annoyed me after a certain point. Maybe someday I'll finish it on easy just to see how it ends. :>
But I digress. I'd like to think a good Fallout game could still happen again. It'd just take a miracle at this point, after millions of fans of the new borderlands-style gameplay have dropped their holiday money on it.
Bioshock was System Shock dumbed down to make space for focus on world design and plot. Some could consider it unnecessary, but I thought the evolution was fine and predictably expected. Whether Bioshock games had good world design or plot is sort of debatable on this forum, so I'll leave it at that.
It's annoying how several people consider that "depth = good game" which isn't always the case. Sometimes, losing depth is a necessary and beneficial part of game design. But I do know there's a discernible difference between shedding depth in favour of focusing on the right things, and shedding depth because they fear that complexity might alienate the audience that produces the most profits. The former I approve of, but the latter is sadly what AAA games today are built on.
And finally, you would think that Fallout would be impossible to turn back, but here's the thing. With the right marketing, you can sell
anything. That's the core of modern capitalism, I think. If a publisher geniunely wanted to, they could order Fallout 5 to be developed into an in-depth RPG so complex in narrative and gameplay that it rivals classic cRPGs, and still make as much money as Fallout 4 did, as long as they advertise it right. Case in point, the Witcher 3, which isn't that complex but tackles both the kind of themes and gameplay you wouldn't see in other mainstream games.
Bethesda doesn't want to favour Obsidian's work. They don't want to share the glory, not because of developer ego (I'm not sure about that though), but because sharing the spotlight means splitting profits. So they undermine Obsidian, if even in the slightest, by not giving them equal marketing as they did their own games. If Obsidian was working under a cooperative and supportive publisher, then Fallout, a post-nuclear roleplaying game, can definitely make it their way to the top of all records and seep into cultural relevance.
If not in Bethesda's hands Fallout could become an RPG again, on this simple basis - if you can make absolute crap sell by the millions, then trying to sell solid gold cannot result in any worse. Just get the right developers and the right games the good kind of publicity and no matter what,
it will sell. Publishers just need to see that there's nothing to lose in letting developers take the charge if they handle the advertising end with their full effort.