If the
order and
harmony of the game were not present.
These can be some facts, such as if the
dealer doesn't know his trade, can't deal the cards

or can't do math

, doesn't understand the rules

, or just doesn't do his job justice

.
What doesn't work is
cheating or
changing the rules and
structure of the game

.
Other reasons would of course be
insults,
discrimination,
racism,
physical violence
, etc. –
reason,
decency and
respect are the “tripod” that supports the table.
Probably also heated
discussions about
politics or
religion.