Answer: betamax

AnswerCrossword Clue
BETAMAXDiscarded storage technology
BETAMAXIll-fated video format
BETAMAXHome-video debut of '75
BETAMAXTape first sold in '75
BETAMAXVHS alternative
BETAMAXLoser in a 1970s-'80s "war"
BETAMAXOld Sony format
BETAMAXTechnology at issue in the 1984 Supreme Court case Sony Corp. of America vs. Universal Studios, Inc.
BETAMAXU-matic successor
BETAMAXLoser to VHS
BETAMAXSony introduction of 1975