The big problem with this is that most of the large enterprises which are really spending the money for this, 99% of the time are going to pick Amazon or Microsoft or IBM for hosting/support over AwesomeOpenSourceLibrary LLC, especially since they likely already have contracts with those companies.
From a practical point of view, if I have N open source libraries that I use in production, as a large company, it is better for me if I have Amazon support all N libraries, than having N different contracts with N different companies for support/hosting.
What open source does mean is surrendering your monopoly over what you build. Amazon may capture some of your value as a result, but that's part of the deal. I wrote about it here:
https://drewdevault.com/2021/01/20/FOSS-is-to-surrender-your...
A lot of enterprise buying decisions come down to: "AWS/Azure/... is already an approved vendor, so let's just buy from them instead of going through the hoops to get Elastic approved". The "super scalers" are offering a path of least resistance that is difficult to overcome.