Simplify the following text for a Grade 9 native English-speaking person.
Original: The term `` pay-per-view '' did not come into general use until the late 1980s when companies like iN DEMAND , HBO , and Showtime started using the system to show movies and some of their productions .
Simplified: The term `` pay-per-view '' became more well known in the 1990s when companies like iN DEMAND , HBO , and Showtime started using it to show movies and other things .