A website need not cannibalize existing sales.

网站不一定会冲击现有的销售。

《柯林斯英汉双解大词典》

Analysts at the investment bank said they expect tablet sales to cannibalize PC sales at a rate of 33% to 35%.

投行分析师说他们预计平板电脑将以33%到35%的速度吞食pc销售份额。

youdao

He worries that a new, updated Raven will cannibalize sales from the larger Puma drone.

FORBES: Companies, People, Ideas

Or, would a bundle cannibalize sales from its existing products leading to lower overall revenues?

FORBES: Product Bundling is a Smart Strategy -- But There's a Catch

Additionally, Microsoft may fear that the device would cannibalize sales from the fully fledged Xbox, or vice versa.

FORBES: The Future is Uncertain for Microsoft's Xbox TV