Although it's something I'd love to write, supporting it over a long time as pure FOSS would probably be a sad experience. I wonder what model could be used here. Maybe something like patreon or "sponsor a feature" with an open-source project? FOSS core + proprietary Java / .NET bindings because corps can pay?
Yeah, for sure this is the type of niche, high-effort work that would be used extensively by the closed-source world and yet struggle to find adequate support.