Technology has moved on... Costs are now in favour of tablets, wifi connected to the 'office' server.
The mindset of some (most?) IT managers, and users, is still set in the past, with desktops still viewed as necessary.
There is a tablet, (BQ), with Ubuntu, which changes between 'tablet' mode and 'desktop' mode automatically when it sees you connect a keyboard, mouse, and external monitor.
The only remaining valid argument for desktops is for 'workstations' for high-power graphics etc.