In this ever changing world, people leaving in this digital age are quite impatient. Browsing a slow site can irritate them. If a website suffers from slow speed or high load time, it is quite possible that visitor immediately left your site and switch to competitor's site.
The condition of global business was not easy at the time when people were not aware about the internet. At that time business transactions, export-import and effective communication between two business parties was not as effective as it is today.