I've worked in various libraries and my wife is a librarian. While it's true, these services cost money, librarians just want you to read more, period. if it means utilizing their resources but not contributing to the tax base that pays their bills, there's nothing abnormal about that. Area visitors and homeless people patronize libraries too.

Electronic resources are finite, only a certain number of "copies" distributable at any given time. Either the library would find a way to grow or they'd advise you where else to go.