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"The tactic kills two birds with one stone. It deprives America's farm belt of a once‑captive market and burnishes China's food security credentials," says Marina Yue Zhang, associate professor at the University of Technology Sydney's Australia-China Relations Institute.

The app stores have a captive market.

“When they decide to go out, they have cars and they can go anywhere. They’re not a captive market.”

The drug trade, the show recognized, was capitalism in its most raw, potent, uncut form, with a killer product, a captive market and a disposable work force.

They have a captive market and they don't want to share it.