AWS benefits heavily from a rich foss ecosystem, but foss systems also makes it easier for users to migrate to similar platforms. If they were to disrupt the foss ecosystem enough, do we enter a world of heavy reliance on proprietary cloud-based systems?

If you were intending to create a profitable business, and really wanted your product to be foss, and Amazon might just fork your project, honestly, what are your options? I'm honestly curious, it seems like such a difficult situation