This is like if Google Spanner were open sourced tomorrow morning: realistically how many people are going to learn how to deploy a thing that was built by Google for Google to serve an ultra-specific persona?
Maybe you might get some Amazon-sized whale peeking at it for bits to improve their own product, but the entire value prop is that it's a managed service: you're probably going to continue paying for it to be managed for you.
IMO it also depends on how the whole process is tied together.
I always loved Vercel for their easy hosting of Next.js with included CI/CD, but I recently switched to self-hosting - their pricing switched from a flat, worry-free $20/month to an unpredictable whatever-it-may-cost plus it sent me 10+ emails every single month about hitting some quotas that they introduced and I couldn't find a good way to stop that.
This is like if Google Spanner were open sourced tomorrow morning: realistically how many people are going to learn how to deploy a thing that was built by Google for Google to serve an ultra-specific persona?
Maybe you might get some Amazon-sized whale peeking at it for bits to improve their own product, but the entire value prop is that it's a managed service: you're probably going to continue paying for it to be managed for you.