As ISO-9000 becomes a part of the routine. Frankly, some companys will not do business with you unless you are ISO-9000 registered. ISO-9000 increases marketability of your goods and services. Training will improve once required training is given and documented. Written proceudres appear where none had existed before.
Coorective actions flow through the organization where none had existed before.
ISO-9000 improves the organization whether you like the paperwork or not. ISO-9000 did not add any new requirements to the basic managemet systems the company should have had in the first place. ISO-9000 becomes a subject of debate, questions, and of expectations. It raises the level and frequency of how often evryone in the organization thinks about quality. That's good in itself.