DeFi protocols Uniswap, Lido, and Aave are adopting token repurchase mechanisms, aligning with traditional financial models. Uniswap's 'UNIfication' proposal seeks to activate protocol fees to buy and burn UNI tokens, while Lido plans an automated system to repurchase LDO based on Ethereum prices and revenue thresholds. These strategies aim to enhance revenue capture and align token value with business performance. However, this trend has sparked a debate over centralization, as control may become concentrated within private entities and governance structures. Analysts caution that while repurchase programs might boost token prices temporarily, their long-term effects on decentralization and sustainability are uncertain.