Voice chat is fairly easy, it's not actually a huge use of bandwidth (in principle it can be basically none and peer-to-peer but that has privacy implications and discord now routes it all through a proxy). The CDN is probably the largest cost, and they have made moves towards cracking down on using it as an image host. But they do have a good income from selling Nitro features, much as many people don't see any value in them. They aren't quite profitable yet, but they're far from burning cash either.
reply