I think that today's blockchain infra is enough for 99% of apps.

Take @ArciumHQ for example, building on @solana.

• Leverages Solana’s mature validator set, slashing mechanics, and economic security from day one. No cold start, no shallow staking, no bootstrapping risk.

• Smart contracts on Solana handle the mempool, job ordering, staking/slashing, rewards, and Arcium's Arx node orchestration. This offloads consensus overhead — Arcium focuses purely on encrypted computation.

Meanwhile, Arcium can plug into any chain for coordination, while keeping compute portable and off-chain.

Not every app needs an appchain.
Sometimes it's better to focus on the USP than the infra.