As of 2024, the decentralized finance (DeFi) market has experienced significant growth, with revenues reaching $26.15 billion. Projections indicate that by 2028, the DeFi sector could generate approximately $37 billion in revenue, reflecting a compound annual growth rate of 9.07% from 2024 to 2028. This upward trend suggests a promising future for altcoins, which are integral to the DeFi ecosystem. However, it's important to note that the cryptocurrency market is highly volatile, and actual revenues may vary based on technological advancements, regulatory changes, and market dynamics.