The Japanese Pachinko (pinball) market is bigger than the casinos of Las Vegas, Singapore and Macau combined and is dominated by ethnic Koreans like Masayoshi Son of Softbank whose dad was in the pachinko parlor business. This might explain the "gambling" tendencies of Masayoshi Son and Softbank with investments in WeWork and Better.com
When American pinball was basically just gambling it was also a big market. This led to the mob controlling pinball in many parts of the country. Some cities banned the game, including Chicago, ironically home of most of America's big coin-op manufacturers.