Sweet Jesus, this. At one of my older software support jobs, we had a Law of Inverse Size-to-Attention: the guys with hundreds of employees who paid us hundreds of thousands of dollars in support rarely called us (or if they did, they had actually competent IT staff we could work with), while the Mom-and-Pop shops that paid for the bare minimum licensing and support were the ones that called us every day and repeatedly refused to RTFM. Some would balk at the idea of paying anything at all, as though we should be so honored that Bob's Shack in Bumf*ck, ID decided to use our software that we should wave all associated costs.