Old DOS executables (actually, commands) (which still run on Windows) ended in .com ; there was an overlap with the Internet when they were still quite common (command.com was how you started a command prompt on windows 95), and no-one seemed to get confused
This is a fair & fun point, however maybe a bit of a stretch to compare here; DOS binaries were almost all .EXE well into DOS 3.x, which was many generations before Windows 95. I would say the exception to that had been command.com
