Readers push back on the claim that no one will again build a Wikipedia-like project, citing OpenStreetMap, TV Tropes, fandom wikis and other volunteer crowdsourced efforts that continue and could evolve toward more semantic knowledge systems. They also warn that such projects face long-term strain from younger users’ reliance on corporate app stores, suspicion of libre/altruistic efforts, fewer obvious gaps for newcomers to fill, corporate free-riding and API abuse, and licensing barriers.