Sounds like we're almost back to the logic of the licenses that Borland had on TurboBasic (and probably other software) - "Use it like a book". You could load it on multiple computers, but were limited to using one at a time - meaning that the copy I had at work could be used at home and on a portable (with dual 720K floppies).

I also had a C compiler for that portable - with the proper defines, the same code compiled for DOS or command line UNIX. That was one of the few times the company provided me with leading edge hardware (getting a "Wow!" from someone spotting at a screen full of C while waiting at the Denver airport). But it was for economic reasons, not for the sake of technology 🙁 The portable (Toshiba T1100 http://en.wikipedia.org/wiki/Toshiba_T1100) was cheaper to lease than a Silent 700 terminal...

Maybe I've been doing this stuff long enough 😉

John