Time it took to get 100 million users: Netflix : 10 yrs Gmail : 5 yrs Twitter : 5 yrs Facebook : 4.5 yrs WhatsApp : 3.5 yrs Instagram: 2.5 yrs TikTok : 9 months ChatGPT : 2 months PirateBay: 1 day after Netflix cancelled shared passwords Gen-Z discovered torrents.