You are technically correct in saying that it’s not a registration. Instead it’s a sponsoring: https://en.wikipedia.org/wiki/Sponsored_top-level_domain

expensive pharmaceuticals

antiretroviral meds are getting very cheap though, so not sure if that is really a valid point anymore. https://en.wikipedia.org/wiki/Cost_of_HIV_treatment

There is a limit on the spacing of the colour bands though. If you want colours then you have to hit the spots where the correct phosphors are and this limits the usable resolution.

Palladium

since when is Palladium a REE?