You seem to be suggesting that Sony is price gouging or something when in fact they are probably the most innovative camera company and their GM lenses are fairly and competitively priced against modern lenses for Canon RF mount and Nikon Z mount.

They'll still need precise optics to prevent distortion, chromatoc aberration and coma. And to maintain sharpness. The only advantage the curved sensor brings is that the lens doesn't need a final group to force the image onto a planar surface.