1/ imo, the ethereum community has been galvanized and is becoming aligned around the new rollup-centric roadmap recently described by @VitalikButerin.
2/ With the new rollup-centric roadmap, developers can now confidently expect their dapps to scale on ethereum, more or less immediately and into the future.
3/ Before the new rollup-centric roadmap, I think the extended community of ethereum developers felt a general sense of ambiguity around scaling. Should we just wait for sharding? Do we have to wait until sharding? Are people looking seriously at other base layers?
4/ At least since cryptokitties congested the network, concerns over ethereum's ability and timeline to scale have stoked developer interest in other base layers—especially interest in Polkadot, NEAR, and Solana, which I think are all excellent platforms.
5/ Developers may have found it temporarily easier to scale their dapps on other base layers vs. on ethereum.
However, ethereum now has the new rollup-centric roadmap, as well as huge adoption, the most mature tooling, and best-in-class property rights and censorship resistance.
6/ Ethereum's new reality seems to be that basically everybody is completely aligned around scaling ethereum today, by building support for L2s everywhere.
Plans for eth2's sharding, still years away, may be heavily modified to focus on supporting L2s.
7/ As L2 adoption grows, it seems likely that a handful of L2s will become disproportionally large and powerful, so it matters who owns them.
@optimismPBC is a community favorite and I think will be an exemplary leader here.
8/ Other base layers may increasingly struggle to attract ethereum developers on the promise of scaling alone, because ethereum now scales today and still has the best adoption and best-in-class property rights and censorship resistance.
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