They have been very successful, but not nearly as successful as the PC. This is because Macs are more expensive than PCs, and Mac OS X (also expensive) is proprietary software that was designed to be incompatible with computers other than Macs. PCs were built using Intel or Intel-compatible processors and firmware (BIOS), while the original Macs were built around the PowerPC processor family. This makes Mac OS Classic and older versions of Mac OS X incompatible with a PC. Now, newer Macs are built around the Intel family of processors, but Mac OS X is still designed to be incompatible with normal PCs, because instead of using PC firmware (BIOS), they use a new firmware (EFI). Mac EFI does support BIOS emulation, allowing Windows and Linux to be run on a Mac, but BIOS does not offer EFI emulation. There is a method for running Mac OS X on regular PCs, but Apple has deemed it illegal, so it cannot be discussed here.
Windows is on about 90% of the world's computers, and more people trust it. Not that a lot of people don't trust Macs. Also, Mac is a type of UNIX, and some people just don't like UNIX systems because they immediately associate it with Ubuntu, which "hackers" use. I haven't had much experience with it, but what I have done, I have enjoyed.
Yes, that is was the operating system of Macintosh Computers are called.
Windows is an operating system developed by Microsoft. Apple makes Macintosh computers that run Apple's own Mac OS X operating system but can also run the Windows operating system.
A Macintosh is a computer. Windows is an operating system. A Macintosh can run the Windows operating system. The question is meaningless.
Mac OS
Apple's Macintosh computers use Apple's operating system known as OSX. The current version is OSX 10.8.#. Macintosh computers can also run the Windows and Linux operating systems, but those systems are not included in the purchase of the computer.
The Macintosh Operating System (Mac OS) was created for, and is compatible with, Apple's Macintosh range of computers. As the Macintosh is a personal computer (PC) it can also run other operating systems such as Microsoft's Windows or various implementations of Linux.
iMac, Mac Mini, Macbooks, and Hackintoshes.
The Macintosh Operating System (OSX and variants) is only supported on Apple Macintosh computers. There are hacks which will allow MacOS to be installed and run on PC systems, but this is not supported and may be unstable.
Personal computer line developed and distributed by Apple, Inc. Macintosh computers have a specialized operating system, which differentiates from Microsoft's Windows operating system. McIntosh is also a last name and a kind of apple.
The Apple Macintosh operating system is called Mac OS X.
Mac OS
Apple's iChat software only works with their Macintosh computers and is not available for computers running the Windows operating system.