First of all, we should realize that managing a business has never been easy. There have always been many challenges and problems facing managers. However, it may well be that he challenges faced today are greater and more relentless than in years past. For this reason, I would feel very nervous about being a manager today.
Perhaps the biggest reason for this is globalization. Globalization has created a situation in which there is much more competition than there was in the past. This can make things extremely difficult for managers. Managers are pulled between the relentless need to cut costs and increase competitiveness and the desires of their workers, who naturally do not want to have to work harder for lower pay.
Globalization and the increase in competition that comes with it makes the manager's position a much less stable and much more stressful one in today's world.
Being a manager almost always brings risks, uncertainty, and sometimes a lack of clarity. People are often uncomfortable with change. Many people also like it when their roles are clearly defined and when certainty exists. It seems like there are more risks, more uncertainty, and greater environmental concerns today than in the past. Change seems to be the only constant in today's business world.
Over the years, there have been many changes in the world economy. There is increasing competition from foreign countries that often have less restrictive rules, such as those concerning the environment. For example, while we have rules about carbon emissions, some other countries don't have the same rules. Foreign countries often have lower pay structures and fewer unions. Management has more freedom to do what it wants in other countries. This makes it more difficult to manage a business in our country successfully.
While a manager in the United States certainly can be successful in today’s world even with the factors listed in your question, it has become more challenging to achieve managerial success in today’s very competitive world.