I believe the 21st century, which is technically we are now,corporations is pacing faster along with the revolution of technology. Through modern technology, corporations around the globe will use technology to gain economies of scale, larger companies will harness technology to reduce the costs of complexity.

According to the article of John A. Byrne "The potential for productivity gains is everywhere, in every process, in every industry. The bigger the company and the larger its costs, the greater the opportunity to see tremendous efficiencies. In the years to come, large incumbent corporations that get it will be the greatest beneficiaries of the Net, not the dot-com insurgents that once garnered all the publicity and market valuations. though there were many factors that will drive the indurtries to accomplish thier missions,expanding through national boundaries, shifting toward intellectual capital and other changes their is nothing more important than the rising of internet technologies.
The internet gives everyone the widest possible information. The net is used by everyone in the organization from the lowest clerk to the chairman of the board, the ability to access every information needed can be zapped around the globe in just a blink of the eye. Corporations will also learn to expand network of external relationship. Through the use of internet, the far reaching farms of the supplier will be reach by seconds.
That means that the 21st century corporation must adapt itself to management via the Web. "It must be predicated on the constant change. , not stability, organized around networks, not rigid hierarchies, built on shifting partnerships and alliances, not self-sufficiency, and constructed on technological advantages, not bricks and mortar. Already, old business models that emphasized fixed assets, working capital, and economies of scale have become increasingly vulnerable to nimbler organizations that employ new technologies to reduce costs." according to Byrne's article.
Companies in this century will recognize the real power of technology isn't just to make the business more efficent and productive but will also motivate the industries to transform. Much of it's transformations will involve on the companies relation with it's costumers. We live in the era of which choices of the consumers is unpredictable, of which products and services are almost a click away, companies must offer and cater a lot more than what the costumer had expected. however, leaders were practically going to be careful on applying the latest softwares.
21st century corporations will require new talents and skills of which are mastered for comapnies to survive. Manpower will always be a resource a corporate must have, it it one of the most important factor. Though, the use of machines is a great help to industries.
Managers will have to construct new set of rules and guidepost to their brains. Leaders before thought that creating intense rivalries among competitors will motivate employees and would success in their goals., but later will realize that their greatest rival will have to be it's important collaborator. Instead of competing to each other, corporations will learn that in order to survive, thay must collaborate through partnerships but of course, it will be crucial.

All of this, is what i believe the 21st century-corporations. The fast-rising creation of industries. Armed with latest tecnologies,latest gadgets,machines,skilled manpower and new ideologies.

references:
http://www.businessweek.com/common_frames/ma_0035.htm?/2000/00_35/b3696011.html