If you read the mission statements of 100 companies, at least 75 will mention simplicity. There is sound reasoning behind this drive for simplicity. -- With complexity comes increased costs and more risk.
The first data center I ever stepped foot in contained one computer. It was a big one, with many attached peripherals and a lot of cables. A single vendor supplied all the hardware and software, except for the applications. The computer did all the data processing of the company that owned it, so if there was a problem with the processor or any of the peripherals, an urgent call went out to the vendor’s support organization, and a skilled technician showed up to fix it within a couple of hours.