"Losing every single customer" doesn't have to be as dramatic or unlikely as you make it sound. Consider the possibility that they could introduce a new product

"Losing every single customer" doesn't have to be as dramatic or unlikely as you make it sound. Consider the possibility that they could introduce a new product that supersedes the current one and they stop adding new features to the old product, and all customers eventually switch over. The old product has lost all of its customers, but it's just because they switched products. The escrow deal here is for the specific product, Dyalog APL. It wouldn't cover Dyalog NewThing. In this situation, the escrow never pays out.