The Deal Exists Only If Enough People Buy It

Groupon's S-1 founder letter traces the mechanism to The Point, a website launched in November 2007 as a social action platform letting anyone organize a campaign asking others to give money or take action as a group, but only once a tipping point of participation is reached.

The company began operations in 2008, applying The Point's threshold technology to group buying; by January 2009 it had fully shifted its attention to Groupon as popularity soared.

The conditional deal aggregates demand before the discount is granted: a voucher activates only when a minimum number of buyers commit, so the merchant trades a known discount for guaranteed volume — and buyers recruit buyers, because the deal dies without them. Risk transfers from the merchant's margin to the crowd's threshold, and the recruiting mechanic makes every customer part of the sales force.

Made the discount conditional on a minimum number of buyers, so the merchant gets guaranteed volume and buyers recruit buyers because the deal dies without them.

Buyers spread the deal to tip it; merchants get guaranteed minimums; the deadline plus threshold creates urgency on both sides; and the platform takes its margin only on completed, pre-paid volume.

It fails when merchants can't honor the surge (capacity crush), when deal-seekers never return at full price, when the novelty fades and thresholds start missing — and the model has no lock on either

Any offer can be made conditional on volume: pre-commit thresholds convert discounts from gambles into purchases of guaranteed demand, and the threshold itself recruits the crowd that meets it.

From a 2008 start, daily-deal group buying scaled to an IPO-scale business by 2011 (SEC S-1). Made threshold-based commerce a global format and, just as quickly, a cautionary tale of merchant fatigue and clonability.