I believe the reason is that academics and HR professionals have come to see the limitations of the previous approach of placing emphasis on technology as a factor for growth.
In the days when target markets were limited and the business environment was relatively simple, the development of products and services using technological capabilities was likely the key to corporate growth.
However, as the scale of the business grew and the market expanded through overseas expansion, the business environment became more complex and the company became more susceptible to the influence of the external environment, which may have hindered growth.
So, as a new approach, the focus has shifted to the human resources within a company, and there is a widespread recognition that increasing the flexibility and adaptability of the human resources that actually run a company is the key to growth.