well, here I would guess none of them could make do with a Chromebook - well, they could, but it would defeat the point. Currently most have Igel Terminals connected to either Windows Terminal Server or a Linux server for development work. I suppose you could replace that terminal, its external, full sized keyboard, mouse and 24" display with an small, cut down keyboard and 13" display to remote in, but why would you?
Those that have PCs use a Windows based ERP solution which integrates to Office using OLE, so switching to a cloud Office suite, like Google Docs or Office.com wouldn't work, half of the features for reporting and analysis would no longer work.
The other problem, here, is that Chromebooks are more expensive than Windows machines. I looked on Amazon yesterday, the cheapest Chromebook I could find cost around 385€, that was a Celeron with 2GB RAM, for 20€ less I could get a Lenovo laptop with an AMD processor and 4GB RAM. If the Chromebooks here followed US pricing, they might stand a chance, but they are priced at a premium over better specified Windows kit at the moment.
Over on ZDNet earlier in the year they were claiming that Amazon US had a Chromebook as the number one best seller and several in the top 10. Here (Germany) there was one in the top 40. Looking yesterday, there wasn't a single Chromebook in the Amazon top 100!