That's a bit like comparing apples and oranges. Sure, a neck massager can relieve pain and tension in the same way a professional massage can, but it's an altogether different experience. Many people who own neck massagers still like the immersive and luxurious experience of getting a professional massage, although they may get them less frequently than they did before. On the other hand, some people who own neck massagers would never consider getting a professional massage, anyway.