Good point well made, but the argument still stands.

Another point - the drivers typically have their own onboard rectifiers (they are DC-driven devices even with a AC supply), if you look at the physical size of the drivers vs a PSU supply capacitor then you can expect that there is a compromise with the onboard rectification (that needs to be balanced against the losses introduced by the additional rectifier). But, yes, you can still opt to use the AC supply straight from the toroidal. In that case I'd chose to wire each driver straight back to the transformer, and not to daisy-chain them.