Admittedly it was a long time ago, but I worked in the semi industry and this isn't how things were done. We manufactured batches of totally obsolete EOLed devices for various customers when they had sufficient volume. Devices that are in volume production (e.g. for cars) are carefully managed by people who do nothing but ensure that they're available in the right place at the right time in the right volume. In order to not have product available to meet demand either a factory has to go on fire, or the customer has to screw up their forecast.