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Running Windows on bus screens at Schipol Airport
(slrpnk.net)
This is a most excellent place for technology news and articles.
Linux isn't free at the enterprise level. You aren't just downloading a Linux flavor and slapping it on everything. There's going to be a support contract to cover if something weird happens an expert is on site to help fix it within 24hrs. There's going to be guarantees that if software does x it will work even with future os updates. Replacement hardware will be available and compatible as well.