Earlier quoted context omitted.
Let me steelman that argument. Libraries were invented because information was only available on printed (or hand written) books, which were very expensive and scarce resources. Now information can be available almost literally for free and instantly, to anywhere. If the institutional inertia of libraries didn't exist today, would they really be invented as they are? https://wiki.lesswrong.com/wiki/Steel_man
Free (except for the cost of bandwidth/internet access, including devices), instantly (unless internet service is poor or inconsistent or both), and anywhere (that has internet access), you mean. There's nothing improved about the argument, it's just obfuscated better.
Free: Transportation to go to your library (2x train ticket, or car + gas): minimum ~$5 / day so $60 a month, plus library card if not free
Instantly: ~30 minutes to go, 30 minutes to get back home, depending on where you live. Worst internet connection need a few seconds.
Anywhere: you have to physically go to the one library and hope you find the book you're looking for. Nowadays you have internet access pretty much anywhere.