On volume, bought lists win - nobody's arguing that. But "20 leads" and "20 chances" are not the same thing. A handful of exclusive leads you captured yourself can genuinely out-earn twenty you paid for. The frame that explains it: fewer, better, yours versus more, shared, rented.
A bought lead is almost always sold to four to eight agents at once. So "20 leads" is really 20 people already being hammered by a half-dozen competitors the same afternoon. A lead you captured is yours alone - no bidding war, no "I already talked to three other guys."
A self-captured lead came to your page or form and raised their hand - they're expecting your call. A purchased lead often filled out some generic quote-aggregator form (sometimes incentivized, barely remembering it) and is annoyed the phone is ringing. Same job, completely different conversation.
This is where the math flips hard. Shared, purchased leads convert at low single digits - often 1-3%. So 20 bought leads is maybe one deal, if you're fast and lucky. Warm, exclusive, inbound leads convert at multiples of that. Three good self-captured leads can out-earn twenty bought ones on closed business alone.
The bought 20 are gone the moment you've worked them. Your capture page keeps producing month after month at roughly zero marginal cost - and you own the data. You can re-market, nurture, and build a book. Bought leads are a rented treadmill: stop paying and it stops moving.