No, some Cambodians are seeing a very sizeable benefit, probably the standard 20% that the leading family cream off of any major investment in the country.

And BTW it is not just the Chinese, there are innumerable other operators, including a whole bunch of smaller 'startups'.

They operate because Cambodia openly accepts it, and takes a cut, not because they are somehow so clever as to disguise the real business being conducted in closed-up apartment blocks.