I believe that gas fees on the Ethereum network can be higher for several reasons. Firstly, Ethereum is one of the most popular blockchain platforms, hosting a large number of projects and applications, which can create competition for block space and consequently drive up fees. Secondly, the Proof of Stake (PoS) consensus algorithm used by Ethereum doesn't always guarantee consistently low fees compared to networks with other algorithms. Additionally, the growing interest in DeFi and other applications on Ethereum can lead to increased demand for transactions, further driving up gas fees.