Kyle felt refreshed putting that man in his place even though he didn't owe Nakamura any loyalty. He knew that this man might very well be a test to see what kind of person he was.
If Kyle threw Nakamura under the bus then there was no way that the others in this room could trust him.
The man was more surprised that Kyle had that much money than he was being humbled.
The fact that he had a black card meant that his finances were on another level.
Kyle noticed that Nakamura was watching him across the room, almost like he was measuring him.
"This is a test," Kyle thought to himself, the same way Nakamura was the one bringing him into this world, there was a chance that he did the same with others.
There was no way he clawed his way to the top without help from others or having companions he could trust within this building.
Kyle smiled inwardly, this was the kind of man Nakamura was and Kyle was willing to play his game.