Lido's share of staked ETH has dropped to ~21%, down from a concerning 32% peak in 2023 and now well below the 33% threshold where a single entity could disrupt Ethereum's finality.
That's some real progress for maintaining decentralization. But stake distribution is only one axis.
The next step, and something that seems to be getting sidelined for leaner protocol builds, is client diversity.
A network can have healthier validator and operator distribution, while still carrying concentration risk if too much of the network depends on the same software stack.
Both execution clients and consensus clients need diversity. A supermajority in either layer is a single point of failure waiting to happen.
Decentralization means distributing power over the network, and that includes the software keeping the network online.