You don't think Google, Apple, ... Uhh, everybody, don't have money? You come on, man. Duuuude, tech companies are legit loaded.
Yes but they had this done already https://en.wikipedia.org/wiki/Chase_Center_(arena) You pay, you play A new privately financed, $500 million 17,000 to 19,000-seat arena was planned to be located on Pier 30-32 along the San Francisco Bay waterfront, situated between the San Francisco Ferry Building and AT&T Park.[8]