Is Moonbeam decentralized?

Could you please clarify for me whether Moonbeam is truly decentralized? I understand that blockchain technology often promotes decentralization as a CORE principle, but I'm interested in understanding the specifics of Moonbeam's architecture and governance. Is there a clear distinction between its control structure and that of more centralized systems? How does Moonbeam ensure that power is not concentrated in the hands of a few individuals or entities? And are there any measures in place to prevent potential centralization over time?