You never know what item can come back and haunt you. Here’s an example from an oil and gas client I have worked with. They have custody measurement systems (who doesn’t), and they use supervisory metering computers to manage the flow computers available at particular assets.
Now, all the SMCs run their programs in an environment called Citect. They have had environments and application software developed by the local, Malaysian team, and others developed overseas. You would have thought that the two would play nicely together, wouldn’t you?
Wrong. Wrong. Wrong.
The overseas developer didn’t (wouldn’t) give the source files to the local folks. Hence, any work that needs to be done on the MCS has to be sourced back overseas. You can understand why this foobar gives grief to client, and why they are thinking of replacing these made-in-Westernstan system with homegrown apps.
How about something closer to home. Did you know that the HP Photosmart 3310 all-in-one has region encoded ink cartridges? You know about DVDs, Wiis and warranties, but actual print cartridges? Makes you want to buy region-free printers:
“Boss, ini printer boleh pakai cartridge chiplak?”
Wata - Malaysian Oil and Gas Engineer 
i got a canon bubble jet dedicated fax machine (not those 3 in 1) that does accept ciplak catridges.