Sorry, but the thoughts I have with regard to arcologies go in very different ways from yours.

It's a panopticon. a complete police state where there's no privacy, no individual freedoms. Everyone is watched all the time because no one is ever outside the zone of control or between overlapping zones of control to create jurisdictional gray areas. Everything is rationed, because the arcology has to operate on the concept that everything you need is in the arcology. That means resources must be tightly controlled - and so only the rich & powerful get what they want, and everyone else might be allowed to exist. And of course they can't be allowed to leave, because then the labor force to support the rich people will be gone. So any possible arcology becomes a massive prison - at best.

Second, I'll admit that I'm a Shadowrun fan. Possibly one of the greatest tragedies in that setting was the horrific incident in the Renraku Arcology. And really it's just an image of what could happen. People are closed in and murdered by something they can't control.

I live in the densest part of the USA, in a metropolitan area that can give my friends and loved ones from rural areas a panic attack just by existing. More consolidation and more control terrifies me.