So your saying its more 19th Century "Gilded Age"? — robber barons, monopolies, Pinkertons, luddite rebellions, urban migration and rur dispossessed, utopian communes, mad darwinist, carnival sideshows and seedy cabarets.
I could see adventuring in that era
That's the thing, the tech levels vary wildly because the overwhelming majority of science is segregated between two Guilds and any technology the other Guilds develop is so specialized it rarely ends up being used in the mainstream.
The Simic hold the monopoly on biological science and the Izzet hold the monopoly on chemical and mechanical science.
And since the Izzet are more interested in doing things than getting reproducible results or caring about safety measures most tech that could change the status quo tends to blow up along with whoever invented it.
Ravnica's Guildpact was created by an order-obsessed imperialist Planeswalker specifically to eternally preserve the status quo.
Anyone who'd try to violently change the system gets their violence turned against those threatening the status quo (the Boros), forced to do so without the technology that would let them actually win (the Gruul), or ends up a member of the insane murder cult I mentioned (the Rakdos).
Anyone trying to change the system through legal means faces a legislative system where representative are voted on by the legislative system and negative order by removing conflict is valued over justice (the Azorius) and a bloodline-obsessed oligarchical Guild that can purge independent thoughts where they can enslave your soul after you die if you owe them money (the Orzhov).
The point of the Guildpact is to preserve the Guildpact, not the people.
Then the events of the storyline happened, the metaplot advanced, and things kept changing for the better as the status quo was disrupted while still leaving plenty of room for adventures and creating new opportunities for them.
Ravnica has endless possibilities for adventures, it's just that it wasn't designed with them in mind so the actual setting details that would help DMs design adventures aren't there, most of the protagonist roles are filled by canon characters, and DMs have to either pick a previous era or deal with whatever revelations the next Ravnica storyline brings about.