Same component name on all three sites, three different lived outcomes. Switch to Mobile and scroll: MarketInvoice's floating CTA is desktop-only (a reserved-space bottom bar takes over on mobile). FundBiz's was redesigned from a pill to a full bottom bar after a documented real incident of it overlapping body copy. PeptideClear's FloatingCTA is still shipped in the bundle but fully removed from rendering, its mobile sticky bar below is CoATrustBar, a deliberately non-monetising replacement.
CoATrustBar, pointing at the Trust Index rather than a purchase flow, a strategy choice, not an oversight.