It's a risky business for egomaniacs losing game (6)

I believe the answer is:

casino

I'm a little stuck... Click here to teach me more about this clue!

'game' is the definition.
(I have seen 'game of cards' mean 'casino' so perhaps 'game' could also mean 'casino')

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for casino that I've seen before include "Gaming house" , "where one can lose a lot of money" , "You can win a fortune here" , "Gambling emporium" , "Gambling venue" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.