Large parts of the tech world have been in a heavy discussion over which media format should be the next high definition format for home video. Some also refer to it as a "format war", making it sound like huge masses of consumers, movie studios and tech names are fighting it out. As it stands, the chart below gives an idea of market penetration.

Credit to Dennis Forbes for that one. Another good point from his article:

"[T]o most consumers, DVD is more than adequate for their movie viewing needs. Not only is DVD adequate, it's generally the high-point of their visual experience. An experience that is dominated by pixelated overcompressed online videos and cable companies that hyper-compress hundreds of channels onto too thin of a pipe (...)"