I worked at Mouser as an engineer for a few years. This included work on the service that charges this blanket tariff rate, which includes incredibly complex business logic that ended up taking half the year to make. and that was with upper management pushing us very hard to get it done. Digi key from what i understood is a smaller company that lacks the ability the capacity to get something like this done as fast. or at least thats my best guess. Mouser knew the obstacles digi key dealt with when it came to things like capacity, storage, and developer power. I remember the discussions about how we could "beat" them out in sales revenue and why we were more "bulletproof" in the way we did business.