And chasing down purchase orders and higher expectations for customer support and, once you have direct sales, you need training for sales, and you have to generate qualified leads for them, and you have to respond to RFPs...
Just so you know, you don't have to mention that you upvoted, it's actually recommended that people don't do that here, so that we don't get tons of comments like "thanks" which can make it frustrating for others to wade through such comments for the value added ones, as you mention.