The best you could hope for in these situations is perhaps a job. It's not uncommon to see not just in open source but in business in general that the large player will try to extract business knowledge and reimplement themselves. The code isn't the value, it's the people maintaining it and the community or customers using it. I've seen it happen with Google and a real business also. So I think ultimately cooperation turns into coopetition where you're going to compete until some agreement can be reached. In a business case, Google fell flat on its face and acquired the company I was working at. In the case of open source I've raised seen it turn into an acquisition as we've seen the forks are really about code ownership for something they run as as managed services or use internally. They're rarely buying it for the people or community.