The primary driver is catalog ownership and pre-death momentum. Juice WRLD had already established multiple revenue streams before his death: he'd signed a reported $3M deal with Interscope Records, had streaming numbers in the billions, and his posthumous album benefited from completed, high-quality recordings and features ready for release. Pop Smoke, by contrast, was still building—he'd been in the game for roughly a year when murdered, meaning his estate inherited less finished material and fewer established licensing agreements. When 'Legends Never Die' dropped, it had the advantage of a fully-formed fanbase hungry for more Juice content, while Pop Smoke's team had to reconstruct and piece together his vault.

Merchandise and branding rights explain another significant chunk. Juice WRLD's family and label negotiated more aggressive merchandising strategies—hoodies, limited drops, and tribute collections that capitalized on his cult following. Pop Smoke's estate took a more measured approach, focusing primarily on music rather than supplementary revenue. This matters massively in the $15M versus $8M gap; even a 20-30% merchandise contribution shifts the needle by millions. Additionally, Juice's streaming numbers are simply higher—his catalog consistently outperforms Pop's in annual streams, meaning royalty checks compound differently over time.

The final piece is estate management sophistication. Juice WRLD's team (including his label and family advisors) made calculated decisions about feature collaborations, remix strategies, and release timing that maximized chart penetration and cultural relevance. Pop Smoke's posthumous rollout, while commercially successful, lacked that same strategic arsenal—partly due to being gunned down at 20 with less professional infrastructure around him. The $2-3M annual streaming revenue Pop generates is solid, but Juice's estate likely earns $3-5M annually, meaning the wealth gap will only widen as compound interest and catalog value appreciation play out over decades.