why no "ultralight" sockets?

I see lots of gear manufactured and marketed as ultralight. Usually via: use of aluminum and/or titanium in the case of guards, nuts, or points; boring out metal from areas in the case of grips, thinner steel in the case of blades, lighter conductive material with lames…

But recently while assembling a foil I noticed every foil socket I have ever seen is made up of pretty thick and heavy steel. If people are willing to spend to save a few grams by using a lightweight nut, why not a socket made of a lighter weight alloy and/or one with some of the socket "arm" thinned or bored out in a way that doesn't compromise it's strength too much?