Everyone is optimizing for their own local use-case. Even open-source. Standards get adopted sometimes, but only if they solve a specific problem. There is an

Everyone is optimizing for their own local use-case. Even open-source. Standards get adopted sometimes, but only if they solve a specific problem. There is an additional cost to making or using ontologies, making them available and publishing open data on the semantic web. The cost is quite high, the returns aren't immediate, obvious or guaranteed at all. The vision of the semantic web is still valid. The incentives to get there are just not in place.