Zuckerberg is ambitious and follows Andy Grove's idea of "only the paranoid survive" and wants to stay ahead of disruption. AI models are in danger of becoming commodities—users can build their applications and, through the cloud, easily switch between models.
So, to differentiate, he is leveraging the fact that Facebook is minting money (they exceeded this quarter by a lot), by throwing it at the best researchers, and is promoting this idea of "personalized super intelligence."
All the AI players are starting to think about the model being a commodity, and so Meta is not the only one trying to escape from being behind a phone or PC. While Meta is talking about AI glasses, OpenAI made the big teaser announcement that they partnered with Jony Ives (the famous Apple designer) to create their own wearable AI device (rumored to be a pendant).