Thing is, thats not what attracts us. Its the way the world is alive. Lords finally did it too. The world is built to where it tells a story.
The Fire Giant is imprisoned by the kiln, left to be the last lone guard.
We arrive at the Temple of the Deep, only to hear i passing from an NPC that Aldritch isn't there, when we arrive where he should be he is not there.
The weird singing beasts around Liurnia can have their song translated, and they sing of being persecuted by the "Golden Ones".
These things are crafted with care, knowledge, and purpose. All of this is antithema to the quick bursting format of GaaS, where content is live for all of 3 months before becoming dead. It does not serve the art form, and you'll be left with hollow shell of a game as devs don't have time to breath life into each boss. You'll also end up getting even more reskins and people already complain about that.
Mans has gone hollow, doesn't think the atmosphere and lore are a major draw of FromSoft Souls games. So much so that nesrly every other Soulslike has tried to have a mind blowing story. Look at the genre dude, its painted in Miyazaki's favorite colors.
Edit: and soulslikes really refers to two things:
currency experience
dropping it when you die
That seems to be what the industry has decided on when they tag a game "soulslike". But they're missing the most vital pieces. Thats why "2D rpgs with deep lore" are role playing games and not soulslikes.
You can, but specifically, soulslikes have currency experience, you drop it, and there are checkpoints that refresh the area. Its a specific gameplay loop and mechanical feel that makes it a soulslike. Yes, they are technically RPGs in the same way an IPA is also a beer. Idk what you're pulling at. I can frame Fallout as a survival horror. These bins we put games into are slightly arbitrary, but it means they contain systems that are alike and provide much of the same feel or user experience. Fallout does not provide the same user experience as dark souls. If you want to discuss in good faith I'm all for it. But you seemingly want a battle of wits, and have arrived unarmed.
I was arguing for the opposite. A GaaS soulslike would be filled with garbage content and uninteresting bosses due to the development environment created by the unending stream of new "content". You can do it, but its not going to taste good.
Then make it dude. Make that big pile of shit. Stress your devs out so they can't place all the tiny details in the environment that connect the boss to the area. Shit out new areas and bosses so fast they have no lore. Watch, as your game sells none because soulslike players aren't there just for the mechanics. Which, speaking of mechanics, they will be garbage too. Do it. I won't stop you.