Yeah, I remember spamming cities seemed to be the only way to get ahead in Civ 1 (and democracy to elimite waste/corruption... ha!). Now I play most Civ 5 games with somewhere around 3-4 cities if I'm not going for a conquest victory.
You're probably right. I've only played Civ5 though, so that's the only perspective I have. Hopefully they continue the trend with Civ6!
I agree. Venice was a very viable Civ to play as in V, and there you're only allowed one city.