We should distinguish between centralization of the consensus algorithm and governance.
The hashgraph algorithm is highly decentralized - there are no leaders, miners, coordinators or block producers with special influence towards consensus.
The Hedera governance model is also decentralized. All members of the Hedera Governing Council will have equal voting rights and Council members (except Swirlds, Inc.) will be limited to a three-year term with a limit of two consecutive terms. Swirlds, Inc., the owner, and licensor of the hashgraph technology will retain a permanent seat on the Governing Council. Council membership will be decentralized across sectors and regions, with no one industry or country having undue representation.
Source
Is the Hedera network decentralized?
