129
Why aren’t motherboards mostly USB-C by now?
(philip.greenspun.com)
This is a most excellent place for technology news and articles.
Still any more than 2 seems like a waste since PCs also have dedicated video, audio, power, and data ports. USB-C makes sense on laptops and phones because you can lump all those things into one or two ports. This isn't necessary on a PC and just adds extra cost with little benefit.
My board from 2018 has a rear USB-C and header for front USB-C. I've only used only one of them a handful of times in all these years to transfer large files to/from a phone and this is coming from someone with a lot of different devices that use USB to interface with the PC.
You’re assuming you only need USB-C for things where it is uniquely suited, whereas im assuming we want to transition everything to the new standard, so we have one port, one connector, one wire
Its a worthy goal but I don't see it happening for decades as everything still uses USB-A and again there isn't a whole lot of downside to the current configuration as long as you have at least one or two USB-C for the tines when it's uniquely suited.