Eli Ben-Sasson, co-founder of Ethereum Layer 2 StarkWare (STRK), argued that Bitcoin (BTC)'s fixed total supply model of 21 million units is not a reasonable structure in the long term. He emphasized via X, "Over time, permanently lost BTC due to lost private keys will continue to accumulate, and over an infinitely long period, all keys could disappear. BTC needs a clear monetary policy with an issuance rate cap. For example, setting the maximum annual issuance rate at 4% would allow for maintaining sufficient supply in line with population growth."