Layer 3 networks, as discussed by Vitalik Buterin, offer potential cost-saving benefits but do not inherently enhance throughput. Buterin suggests exploring lighter alternatives to achieve similar cost reductions. The debate around classifying L3 and L2 networks remains open, highlighting the evolving nature of the ecosystem. Polygon CEO Marc Boiron presents contrasting views, sparking discussions within the crypto community. Despite the presence of key players like Orbs and zkSync Hyperchains, the L3 ecosystem remains relatively small. Overall, while L3 networks hold promise, ongoing discussions underscore the complexities and uncertainties surrounding their implementation and impact.