Fine (and Fee) Service

According to the article “Overdue library materials sparking online shutdowns” Waco-McLennan County Library system patrons are now fobidden to use library computers if they have $5 or more in fines on their account. Later in the article someone asks the proverbial question: But what about the children? Why does this has to come up before such an action is questioned. Why isn’t anyone asking the question “Why are our libraries having to survive on fines and fees?” Are they? Are they?