IIRC from the days when glossy became popular, matte screens scatter incoming and outgoing light, but glossy screens reflect incoming light and transmit outgoin

IIRC from the days when glossy became popular, matte screens scatter incoming and outgoing light, but glossy screens reflect incoming light and transmit outgoing without scattering. So in a showroom the glossy screen looks better - blacks are blacker and colours are brighter. It's the same effect as TVs having a showroom mode that jacks up the brightness and contrast. Why this didn't happen to monitors I'm not sure. Perhaps monitors are more often purchased online based on comparing specs, but laptops are more of a fashion item since we managed to make computers pervasive in society.