If each ICT segment of the world market is considered separately, it can be noted that the growth has occurred in the following categories: data centers, software for companies and IT services (Table I).

Table I. World expenditure in the ICT sector

Source: [8].

Fig. 2 presents the dynamics of world expenditure in the ICT sector in 2016–2018.

Fig. 1. Dynamics of world expenditure in the ICT sector in 2016–2018.

Despite the gradual elimination of borders and the establishment of close relations among countries, there is still an obvious asymmetry, which also manifests itself in the level of access to information resources. Highly developed countries accumulate the majority of information resources. Their investment in the development of science, technical education, information infrastructure, as well as the development of various projects, significantly exceeds the contribution of under-developed countries. Countries with a high level of development are able to spend much more funds on the knowledge sphere. Effective legislation on intellectual property enables them to assert their right for scientific developments. The phenomenon of monopolization in information sphere has such negative consequences for society as stratification of the population on the grounds of intellect, an increase in the demand for employees of the information sector as compared with the traditional one and an obvious gap in their income. The capability of highly developed countries to provide jobs in this area leads to labor migration of interested qualified employees from countries with lower potential [9]. Thus, examining the global ICT market, it can be reported that out of 250 largest world companies in this industry from 34 countries, 116 companies (46 %) belong to the USA and 39 (16 %) to Japan [11]. Thus, the essence of digital inequality lies in the polarization of the world’s countries in terms of possessing effective knowledge and the ability of its implementation in the form innovation, which, in turn, ensures a country’s income growth [9].

Summarizing the opinions of many scientists working on this issue, digital inequality can be defined as follows: it is a gap between the world’s countries in terms of access of their citizens, households and business entities to modern ICT and its effective use for the purpose of economic growth and development, caused by asymmetry of scientific, socio-economic, institutional and technological achievement levels, which threatens to deepen international disproportions and escalate imbalances among countries. That is, digital inequality reflects the differences among and inside countries in terms of access to infrastructure, including computers and the Internet or even such “regular” communications as fixed telephone lines. The digital gap may exist between developed and developing countries (global gap) or within one country (national gap). It can manifest itself in various demographic characteristics, such as age, gender, income or different areas (for example, urban and rural). Most often, the gap is manifested in various conditions of people’s access to ICT. Mobile access, the number of Internet users and personal computers are also indicators that determine the gap size. It is often the case that a particular country can achieve a comparatively high level in some area, for instance, mobile access, but at the same time, it may lag behind in terms of the Internet access index.