The benefit of standardization is best reflected in the success stories of those who actively participate in the standardization process.
The World Standards Cooperation (WSC), the common platform for action of the three internationally acknowledged standardization organizations ISO, IEC and ITU, provides its own newsletter with appropriate examples and statements.
Standards generate economic benefits which have been estimated at 16 billion euros a year for Germany alone. The most important aspects for Germany have been summarized on the Web page of DIN.
International electrotechnical standardization supports companies, governmental authorities, international organizations and the general public through the work of the IEC. The respective statements, evaluations and a lot more information on the benefit of this work can be found in "Your perspective" on the IEC web page.
Some articles published on the DKE homepage contain statements on the benefit of standardization or show examples of its positive effect (available in German language only).