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ECS builds up on protocol/interface oriented programming, where COM is the poster child how to organized such components.

There is CS literature about component oriented programming.

Component oriented programming seems to about about inherting only interfaces, but still abstracting the data behind function interfaces?

That's not at all what ECS's are about.

Component architecture doesn't specify how the data is stored, you are free to do SoA or AoS, depending on the case.