About Sol, I still believe that in the coming years it will grow and have a definite place in crypto what it has shown in 2021 is really impressive and this year Luna is what I think it will be like Sol last year.
Of course. Altcoins often sacrifice decentralization in exchange for high-performance and cost-efficiency. Solana is no exception to this. It'll be up to the person to decide which type of Blockchain network to use for his/her own benefit. My guess is that businesses and companies will use the Solana chain, while ordinary people will use Ethereum the most (as it's still the most popular smart contract platform despite the high fees and slow TX confirmation times). Development is still on-going for Solana, so it's likely the project will have a bright future ahead of it.
Hype usually drives prices all the way to the moon, so SOL may turn out to become widely successful in the future if hype persists. As long as there are decentralized cryptocurrencies in play, nothing else matters. Just my opinion