Netlify didn't buy Gatsby for the framework. They wanted the hosting business and the GraphQL thing. They said this at the time, and it's true. It was barely resourced. Cloudflare is only interested in the framework (because Astro has nothing else).
Source/disclosure: I worked at Gatsby, Netlify, Astro and Cloudflare
Seemed a good idea at the time. The unified data layer was always the best thing about Gatsby (which is why I nicked the idea for the Astro content layer), but maybe not as a hosted product
Source/disclosure: I worked at Gatsby, Netlify, Astro and Cloudflare