I'm a Hong Konger, I've never heard of any business or individuals who would categorize HK and Kowloon/NT as different markets.
IFC and ICC are literally 2 mins apart via the MTR line Tung Chung line. There's no way they would allow 2 Ritz Carltons so close to each other. I've only seen Interncon's so close to each other.
Macau, however is a completely different market.