I think AI and spread of technology both suppresses and supercharges crowdsourcing inclinations. Once AI is better than the best researchers, who would manually maintain a Wikipedia? There might still be random manual human audits, but something like Grokipedia seems inevitable.

I think this will be the case for other things too. OpenStreetMaps won't need as many contributors as more sensors come online, eg. sensors and footage from hobby drones and people's phones augment how much information a single person can enter about a city.