Fidelity report: Solana has run two years without mainnet outages, flags concentration risks

• —Solana mainnet has operated without outages for two consecutive years
• —Slot time was cut to 350 ms, with a target of 200 ms in three 50 ms steps
• —Fidelity flags staking concentration and dependence on one client implementation
• —Shared cloud and data-center providers pose a further operational risk