Shares are always "x% of whatever this thing turns out to be worth in the future". It can be something, it can be nothing.
Disney is giving them money in the hopes that the AI market (bubble?) keeps growing and the value of OpenAI grows with it. And importantly, Disney wants to shift to AI generated slo... content so partnering with a top player with a proven product is a safe choice. Disney licenses its IP to OpenAI, OpenAI can then provide tools that generate said content Disney-style.
> Disney will become a major customer of OpenAI, using its APIs to build new products, tools, and experiences, including for Disney+, and deploying ChatGPT for its employees