Is SOL an ETH killer?

Could you please elaborate on the topic of "Is SOL an ETH killer?" I'm curious to understand why some people might consider SOL, or Solana, as a potential threat to Ethereum, or ETH. Could you provide some specific reasons or characteristics of SOL that might make it a contender in this regard? Also, how do the two cryptocurrencies compare in terms of scalability, transaction speed, and cost-effectiveness? Is there any significant advantage that SOL has over ETH that could potentially lead to its rise as a major player in the cryptocurrency space? Thank you for your insights.