Any company that makes money needs sales. But the main thing reddit sells is ad space. You have to spend a lot of time convincing big advertisers to buy on your platform.

Disney isn't going to just pull up a self service portal to buy ads. :)

The sales people at Reddit actually focus on selling those little plastic bags with goldfish in them to county fairs.

I don’t know why you’d jump to the conclusion that the sales people at an ad-supported website would sell ads.