Crawford and Joelson really lacked experience.
Their status was high, some of their insights unreachable for Gao Yi in a lifetime, but in these unofficial contacts, in the shady social niceties, Gao Yi easily got a grip on Crawford.
No one taught Gao Yi these things, but after frequent interactions with exceedingly wealthy individuals like Shaman and Harold, who held real power over life and death, he picked things up naturally. Thus, it's said that talent is important, but the platform is even more crucial.
Crawford was greedy and lustful, and with just a slight exertion of effort, with a single move, Gao Yi had brought him down.
Those who are higher up cannot say "thank you" for benefits received.
Once he said "thank you," Crawford would be pinned down in an inferior position without hope of rising again.