As a counter-example, SCART connectors were used on some computer monitors. I own a Phillips CM8833, which accepts RGB or CVBS input through a SCART connector (or separate connectors). This particular monitor was bought for use with an Acorn Archimedes computer via SCART (TTL0.7V RGB), but it was also popular for Atari and Spectrum machines. (It also supported TTL RGB signals via a DIN connector.) There are pictures of a CM8833 (including the rear connectors) here.
As others have implied, SCART was a European standard, and the PC-compatible market was led by IBM in the USA. It is notable that these examples of SCART monitors are all non-IBM-compatible machines. Once Once everything became "PC" (or Mac) in the 1990s, SCART monitors were an irrelevance.