it's the opposite if anything! how many people got into reading and writing BECAUSE of libraries? I know I did! I started writing because I was always holed up in the library reading fiction and it inspired me. If libraries didn't exist, I wouldn't have had so much access to books. I didn't have money to buy books, I didn't have bookstores near me. Without libraries, your incentive to write if you ONLY care about paying audiences and profit, would also only be narrowly targeted at people who bought books, and not the general audiences available to you through libraries.