That's something that we are doing at APIMatic already.
APIMatic[1] is a Code-Generation-as-a-Service[2] that generates SDKs for C#, Python, PHP, Ruby, TypeScript and Java from OpenAPI specs (and more formats). We help companies create a better Developer Experience[3] for their APIs using SDKs and API Documentation that are always up-to-date with the API implementation. We have a pretty solid customer base[4] and SDKs generated using APIMatic have been downloaded millions of times.
PS: My email is in my profile.
[2] https://alpha.apimatic.io/continuous-code-generation/