The Value of Professional Ties in B2B Markets
研究发现，B2B买家会为与自己有社会关系（如前员工）的卖家支付更高价格，以换取更高的供应可靠性。
We show that B2B buyers pay more for the same good to sellers with whom they have a social tie (i.e., the individual seller is their ex-employee) and in return get access to higher supply reliability.