The first computer was the giant machine by John W. Mauchly and J. Presper Eckert. 1960s IBM became the unquestioned market leader in selling these large, expensive, error-prone, and very hard to use machines. Computer is expensive.
That brings us up to about ten years ago. Now people have their own personal graphics workstations and powerful home computers. The average computer a person might have in their home is more powerful by several orders of magnitude than a machine like ENIAC. The computer revolution has been the fastest growing technology in man's history.