“Why Do So Many Music Venues Use Ticketmaster?” “What’s It Like to Train to Be a Sushi Chef?” “How Do Martial Artists Break Concrete Blocks?” If you were looking for answers to such questions 10 years ago, your best resource for finding a thorough, expert-informed response likely would have been one of the most interesting and longest-lasting corners of the internet: Quora.
Wikipedia is run by a nonprofit. They don’t monetise volunteer contributions and they don’t paywall the knowledge on their site, they run on donations. It’s not really a comparable situation.