Overall, time sharing was a success. However, it was a limited success. In practical terms, every timeshared computer became overloaded and the response time dropped to annoying or unacceptable levels. Computers become even cheaper. It becomes practical to give one computer to each user.
Initial cost is very important in market.
Protection, security less of an issue. OS back to a shared subroutine library. Hardware becomes cheaper and users more sophisticated. People need to share data and information with other people. Computers become more information transfer, manipulation and storage devices rather than machines that perform arithmetic operations.