Indeed! I just don't think it's on Amazon to fix those institutional and economic realities when they decide to host a project that people find useful.
Companies that provide offerings that are open-source, and then later stop offering open-source updates are not a "golden goose". Organizations that produce open-source need to have a funding model that isn't "charging for hosting". Hosting can certainly be part of it, but there also needs to be a larger strategy. Framing those that don't have one as victims of Amazon ignores the company's culpability for offering the product as open-source in the first place.