I think it is harder to get popular on one site like YouTube, Twitch, Amazon, eBay, Craigslists for most people who are starting out selling stuff on selling sites, or making video and audio content to upload to sites, so they can earn money from video, and people can find their short films, music videos, vlogs, and other content on many sites.
Plus, if you or your viewers live in a country like Russia, and China, the chances of sites being blocked in your country becomes higher, so it is better to use many sites to sell stuff, and upload your video and audio content for people to play.
The terms of service of websites sometimes change, so some users may need to use alternative sites like Craigslist, Dailymotion, Vimeo, and the Amazon App store for making money, and sharing their content.
Plus, if you or your viewers live in a country like Russia, and China, the chances of sites being blocked in your country becomes higher, so it is better to use many sites to sell stuff, and upload your video and audio content for people to play.
The terms of service of websites sometimes change, so some users may need to use alternative sites like Craigslist, Dailymotion, Vimeo, and the Amazon App store for making money, and sharing their content.