Comment by wiether

Two things:

- it's usually sold as "blue raspberry", not "raspberry"; so you know that it's nothing natural here

- it's mostly used in soft-drinks or other foods that are ~~nothing~~ anything but natural

So my guess is that nobody was thinking they were buying something made of actual rasperries; they knew that they were buying something 100% artificial like "mango madness" or "knockout fruit punch"