@Griatch Certainly I would imagine that someone with the code chops could take an Ares or Evennia setup out of the box and do virtually whatever they want with it. I've had more direct exposure to Ares done different ways than Evennia, but I'm sure you could emulate or approximate any function of one within the other if you really wanted to. When I get into combat in FS3 on Ares I'm not not gaming, but when I say 'Evennia feels more gamey' I'm aware it's more a statement about what I've seen either code base do than what either is actually capable of doing.
That being said, Ares out of the box feels like the RP crowd I would've found in the 90's on a less code-heavy, more freeform game. The sort of players who came over from other venues of RP and found MU*. I've really only seen Evennia run Arx, but its resources and item objects in tiers of quality minds me of the code-heavy games where you were more likely to find players that had come from MUDs and RPIs. However they got to MUDs in the first place remains a mystery, but I posit that it has something to do with the large monetized MUDs that were successful and marketing heavily at the time. Your Gemstones and Dragonrealmses.
And once again, we're talking about money and marketing now. What's interesting to me is talking to folks, most of the people I've asked would be comfortable paying a subscription-like fee -- within reason -- to be on a game, provided that the code and admin support felt 'worth it' to them. I think we've all dreamed the dream of a MU* so successfully monetized that its admins can afford to quit their day jobs and focus on pretendy-funtimes whole hog. But there's a slippery slope here. Would you want, as a staffer, to be a literal employee of the game? How chill would players be if they had the mindset of paying your bills, I wonder?