Policymakers: Don't waste your time on the fantasies of the techbros saying "Oh noes, we're building something TOO powerful." Listen instead to those who are studying how corporations (and governments) are using technology (and the narratives of "AI") to concentrate and wield power.
Start with the work of brilliant scholars like Ruha Benjamin, Meredith Broussard, Safiya Noble, Timnit Gebru, Sasha Costanza-Chock and journalists like Karen Hao and Billy Perrigo.