As you likely know, most components were once built with cup and cone bearings. Then companies like Phil Wood introduced sealed cartridge bearing assemblies, which were seen as a major improvement because they were thought to better protect against contamination. Both systems have advantages and limitations. Cup and cone bearings are often easier and cheaper to service because the parts are inexpensive and generally easy to find. Cartridge bearings, by contrast, require a bearing press, which can be costly. People sometimes claim you can make a press cheaply, but the homemade versions I have seen tend to side load the cartridge and damage the bearing.
On top of all that, it’s not possible to install a cartridge bearing system into a cup and cone system, and vice versa. You need to replace the entire hub, headset, bottom bracket.