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. Hedera will initially be operated by a group of KYC'd nodes from diverse industries, geographies, and operational environments. Eventually, it will be possible for any individual or organization to run a node. The network will expand to millions of nodes across at least five continents.
Separately, the Hedera governance model is also decentralized. All Governing Members of the Hedera Hashgraph Council will have equal voting rights and all except Swirlds, Inc. will be limited to a three year term with a limit of two consecutive terms. Swirlds, Inc., the owners and licensor of the hashgraph technology, will retain a permanent seat on the council. The council membership will be decentralized across sector and region - with no one vertical or country having undue representation.
We believe that the design of the Council - composed of multi-billion dollar companies from different sectors and regions - will deliver a governance model that will be resistance to collusion & coercion - the ultimate measures of decentralization.