I would imagine that most of the high volume machine shops have dedicated "prep cells" that are equipped with modular vises for flexibility in quick changes regarding size. Zero point precision holes are established in a drop off section of the raw material and bolt holes are established to secure the part on a grid plate mounted on a machine in the "finishing cell". The sub plate attaches to the machine table and is flat.
The CNC zero point is entered into the machines offset table that the CNC programmer references. This entire process saves countless setup hours and generates more parts per machine hour. The last Machine pass with a cutter separates the part from the framework or tooling tabs.
A vise is not dead by any means