Impact of EIP-4844 (Proto-Danksharding) on L2 costs

EIP-4844 is slated for next year. For those deep into L2 economics, how significant do you anticipate the cost reduction for rollups will be, and how might this reshape the competitive landscape for dApps currently constrained by gas fees on L1 or even existing L2s? Could we see a significant influx of new users due to lower transaction costs?