For some reason we are more accustomed to impedance matching using tapped coils than we are with the use of tapped capacitors. This is too bad because tapped capacitors are a very useful impedance matching tool. Pete recently looked at this technique. Check it out:
I suspect the reason to be down to economics. Cap taps require 50% more parts (3 vs 2) so they cost more. Also, the layout requires more board space, which costs more.