Investors and potential investors in Populace should understand that the platform is not limited to invoices. The smart contract aspect of Populace and using the token as collateral to back the loans allows PPT to do what Salt Lending is planning to do, which is loan $ on Digital Assets.
The short answer is that PPT will start with invoice lending and could easily adapt the contracts to lend money on just about anything. Imagine a global blockchain based lending market powered by PPT.
The only upper limit is the size of the global economy.