These duties would be set to apply to all imports from anywhere, to remain compatible with the most favoured nation rule under the WTO. Although by the nature of import duties they will just be added to consolidated revenue, these same countries would also commit to make an annual remittance to, say, the Global Environment Facility, the GEF, equivalent to the value of the duties collected (minus overheads).
Because the GEF includes an existing mechanism to channel funds for biodiversity protection to poor and developing countries, this is the best way of solving the distribution problem. CITES is not set up to distribute funds to signatory countries, but the GEF is, and it can accommodate the new mandate, because such a change can be made by the 39 donor countries who make up its governing council. Under such a change, the GEF can also create guidelines and funding rules for compliance, monitoring, data collection, tracking, enforcement, and would have the ability to use these rules and guidelines to create an effective global system.
So there is a way to create an ongoing, reliable funding stream, even in the current system. This option has been available since 1992, when the GEF was established. After years of inaction, a level of urgency is needed to raise funds from industry, and channel them into proper CITES compliance and enforcement.
Business can no longer get a free ride!