system
Given the following post, respond as if you're commenting on Reddit:
human
[Bioshock] How Andrew Ryan found enough money to build Rapture?

The creation of an underwater city seems very expensive, even by the standards of Ryan, who is stated to be a wealth businessman after WW2. Also, he built the city secretly, without the government's knowledge or funding, opposed to Columbia which got a massive money budget by the Congress. So, how did Ryan found enough money to create an underwater city(and sustain it for 10+ years)?
gpt
He pooled his money together with other like-minded individuals to achieve a free thinking Utopia. Andrew Ryan was already very wealthy, and an active member of the scientific community, so he was able to create such a place when using the funding of similarly wealthy scientists.

The entire location was made to be self-sustaining from the onset, and had a very small, fixed population, so making sure that Rapture could survive on its own was at the heart of the original construction.