I know this is not a perfect example but isn't it the same country blocked lots of other popular websites?

I haven't seen such websites "collapse" because chain blocked them

Just to show you how China is ridiculously full of censorship, check out how many websites and apps they have blocked so far 

    Gmail
    Dropbox
    Google Apps (Drive, Docs, Calendar, Maps etc.)
    Microsoft OneDrive
    Slack
    Google Play (i.e. no downloading Android apps)
    Hootsuite

    Facebook
    Instagram
    Twitter
    Snapchat
    Pinterest
    Quora
    Tumblr
    Reddit
    AO3

    YouTube
    DailyMotion
    Vimeo
    Twitch
    Periscope
    Pandora
    Spotify
    Soundcloud

    New York Times
    BBC
    Financial Times
    Wall Street Journal
    Reuters
    CNN
    TIME

    Google (text and voice)
    Amazon (Alexa)
    Wikipedia
    DuckDuckGo

    WhatsApp
    Facebook Messenger
    Telegram
    Line
    Signal
    KaKao Talk (Korean)

    Medium
    Blogspot