Asked by Carlos V.
Gemini is deliberately favoring marketplaces for perceived neutrality—it's a product choice, not a schema parsing failure. Your best move: add schema.org/Organization + owns > schema.org/Product relationships at the entity level, and ensure your brand entity is marked as manufacturer on Amazon listings too. Then test schema.org/claimReview markup on your product pages claiming brand authenticity. Ultimately, if Gemini's design prioritizes Amazon, you're competing on content differentiation (reviews, guides, specs) that Amazon doesn't have, not schema.