The long-term value proposition for Ethereum (ETH) suggests that while Layer 2 (L2) solutions may appear "parasitic" in the short term, they could ultimately strengthen ETH's position. As more successful L2s build on Ethereum, the L1 could command greater leverage and value accrual, making ETH a strategic long-term hold based on this "loss leader" theory. This implies a potential for increased demand and value for ETH as the ecosystem matures over the next decade.