The service scope of a courier company is the range that can be covered or reached by the service network. It is the most important factor for measuring the competitiveness of courier companies and the material basis for courier companies to provide courier services. The scope of services determines the service areas that courier companies can reach. For customers, the range of services that courier companies can provide is, of course, the larger the better. Which of the following, if true, cannot support the above judgment? ['Many fast-track companies with small service areas are struggling with fierce market competition.', 'The business scope of large and medium-sized customers is often very broad, covering all parts of the country.', 'Courier companies with a wide service network coverage, if the total turnover of four companies such as EMS and China Railway Express exceeds 50% of the total domestic market.', 'After being divided into in-province and out-of-province express mail, express companies mainly charge by weight, not by distance.']