1. Piracy is rampant, so paper books never had much of a chance in China. Paper books are still cheaper than the ebook versions because of piracy; official books bought at the xinhua book store can be plenty expensive, but no one buys there.

2. China still uses more cash on a percentage basis than the USA and most western countries. China basically skipped credit cards. I still prefer the new UnionPay tap-to-pay NFC cards, much better than scanning a QR code on your phone.