Klaus Schwab, who is the founder and executive chairman of the World Economic Forum, published a book "The Fourth Industrial Revolution" in January 2016 and this word was spread to the world since then. The fourth industrial revolution began in the early 2010s and various X-Tech businesses such as AgriTech, EdTech, FinTech, HealthTech, HRTech, etc. have been growing. The author had been deeply involved in growing HRTech and EdTech businesses in Japan through industry-academia-government collaboration and the breakthrough structure in X-Tech businesses was clarified through the case studies of HRTech and EdTech businesses. Since X-Tech businesses were cross-industry new businesses and mostly public policy dependent, it was clarified that strategic PR (Public Relations) and GR (Government Relations) were important to develop new markets. And the approaches to grow the markets and businesses through strategic PR and GR were structured.