This has been my most successful approach so far, usually winning a Domination victory in the 16th century involving tanks in the cleanup, having outproduced the entire rest of the world for some time (reliable outcome up to Immortal. On Deity, hilarity might ensue before I get there).
Making infinite cities affordable breaks the game in half. While earlier per-city bonuses are nice and can establish a dominant position, I don't believe I ever lost a game in which I was the first to found a corporation. 1-tile cities in the Arctic outclassing my opponents' capitals? Yes please!
Mass drafting would probably be a quicker alterntive that doesn't even depend on infrastructure, but I haven't explored that without corporation support for the final push. Well, on non-Pangaea maps at least.
On most maps the Great Lighthouse is a very important wonder to me. Even without it, a few island cities will make domestic trade routes account for enough that I can ofund more cities and focus on production without crashing my economy.
Later on, having more and better developed cities renders AI bonuses moot.
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On higher levels, I try to claim land quickly if I can't block off the AIs... however, my spacing is optimised for future filler cities, which I will settle as soon as I've run out of land and there's no easy victim in sight.