The money is in the casuals. The games on the top of the charts these days prove that. If they want a bigger profit, they will take the casual route. If they CARE about their fanbase, they won't. It's as simple as that.
I'm going to guess they are going to eventually "dumb down the game". In fact, they've said they already are with Dark Souls II. But not in those ways. They seem intelligent enough to realize that, with the exception of MAYBE difficulties, they'd lose their core fans if they did that kind of change.
Difficulty is an old debate I wont rehash. Changing the core mechanics is only even maybe possible if it becomes a hug, decade spanning series. At which point then they should, the same game released over and over and over is the same game, no matter how well done. Save states? Well... that's a part of the gameplay. If you were allowed to just reload whenever, goodbye bonfires/archstones as anything but "towns" essentially. You'd lose the whole going back to reclaim your souls, and anything else attached to death currently. Which probably is more important the core gameplay really.
Let's be honest, most (not all, but most) people bought this game for the challenge. While the game is fun, and some (like I) would argue the story is nice, if it were an easy game it would have died eons ago. Actually, it never would have lived, stillborn if you will. --- This is a unique signature. I've put it here, so hopefully when you see it again you'll think "Oh yeah, that guy with the stupid signature!"