As per research conducted by Bitcom in 2019, in Germany, companies with above 100 employees were targeted for surveying the obstacles to be identified in Industry 4.0. The obstacles identified in Industrial companies in Industry 4.0 are:-

The major obstacle is no doubt cost. It will always be a huge dilemma to discuss whether to invest in such a trend but to sustain the latest trend so that the company can survive the competition and last long enough however, do Industry 4.0 justifies sustainability and saving the employment opportunity?
Source:- Statista (Bitkom)