First, and the most prospective example is that Altair could be used to finance sustainable, or any other type of bonds.
As of 2021, the size of the bond market (total debt outstanding) is estimated to be at $119 trillion worldwide and $46 trillion for the US market, according to Securities Industry and Financial Markets Association (SIFMA).
Sustainable bonds specifically could bring a lot of attention to Centrifuge/Altair.
Secondly – advertisement invoices. Popular content creators on YouTube/Instagram or other social medias usually got their advertisement schedule filled for months ahead, so that would be very attractive for them to get their advertisement invoices financed. Also if one agency would use Altair for financing invoices this could massively spread the world. Same goes for design studios invoices, architect studios invoices and many others.
This may be similar to what GIG Economy Pool do, but I think it could be much bigger than that.