To lure someone into a difficult or irreversible situation and then cut off their retreat; to entice someone forward and then leave them no way back.
在商业竞争中，一些公司会采用上竿掇梯的手段，先给出优厚条件吸引合作方，之后再限制其选择，迫使其就范
In business competition, some companies employ the tactic of climbing the pole and removing the ladder, first offering attractive conditions to lure partners, then restricting their choices to force compliance.
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