
The workstation market might be small but it churns. Workstations typically get replaced annually whereas typical desktops might be used for years on end.
Your typical desktop PC costs about £400-£500 whereas an average workstation will cost easily 6 times that. So even if the workstation market is 6 times smaller than the desktop market, it is still way more profitable because people will be paying 6 times more money probably 5 times more often than a desktop customer.
Sure, there is the gaming market, but that isn’t as profitable as you’d think because the margins are tighter and once again even the most die hard enthusiasts probably aren’t doing a complete upgrade once a year.