VGA-equipped monitors are becoming outdated and being replaced by digital interfaces like HDMI and DisplayPort. Yeo Kheng Meng designed an 8-bit ISA display card with an HDMI output to allow older PCs to connect to modern monitors, and similar upgrades have been made for retro computers like the Amiga 500 and PlayStation 2. Open-source implementations exist to simplify working with HDMI.
https://hackaday.com/2023/09/10/upgraded-graphics-gremlin-adds-hdmi-video-to-vintage-pcs/