hi there, just to confirm I got it right, from the license perspective, if I’m building a SaaS product, can I use open source, self-hosted version of Meltano? is there any feature that is not available in the os version that would become a blocker to build a product that allows our users to integrate their data sources? (similar to the way Powered by Fivetran does it)

Meltano is MIT licensed so you're free to do as you please! Most of the connectors are as well. Arch is not a good fit for embedded EL at this stage. We do offer open source support contracts though if your team needs some Meltano expertise https://meltano.com/pricing