I suspect that this is partially caused by the fact that 'spaces' is the non-default choice in many standard IDEs such as Eclipse and the rest of its enterprise

I suspect that this is partially caused by the fact that 'spaces' is the non-default choice in many standard IDEs such as Eclipse and the rest of its enterprise friends. Software engineers who make active choices in their setup rather than just accept default configurations and tools tend to be better at other aspects of their job too?