How many hobbiests running miniature train sets in their garage have monetized those train sets? How many backyard gardeners sell their crops.
In most cases people who choose to develop and administrate an instance of their own are largely just hobbiests of another type. Sure it costs them some money. Many hobbies cost money, it doesn't stop people from building things or growing things for fun.
IT folken! If corpo borporate boss ever tells you to erase the security footage and/or logs, remember these magic words: "Sure just send the request in writing and I'll get right on it."
And maybe backup those logs to a thumbdrive if you feel comfortable with that.