Technically, the nozzle provides thrust in the hot gas path. Point taken though. In jet engines, you're correct, most of the power is robbed by the turbine. :-)
https://i.stack.imgur.com/47W9J.jpg
Note that here, the largest source of thrust is from the components that jets and rockets have in common (combustion chamber and the divergent section after the turbine) - though here, in a non-afterburning jet engine, the nozzle must be convergent rather than divergent, and that imposes a cost.