Thelonger the vertical distance, (ie, the more inelastic the demand curve) the greater the monopoly's power, and thus, the larger its profits.

较长的垂直距离(即更弹性的需求曲线)的更大的垄断性的权力，因此，较大的利润。

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Companies that cater to children are subject to a more inelastic demand curve than other firms, says LPL Financial chief investment officer Burt White.

FORBES: Magazine Article

But inelastic demand works in both directions on the price curve.

FORBES: The Earl of Oil