Maybe someone who knows electronics better than me can chime in with corrections and/or correct terminology, but my impression is that USB PD doesn't lend itself to having a bunch of type-C ports that draw from a shared max power rating in the way that's common with USB BC devices. e.g. if you have a 100W brick, you're going to have five ports with 20W max, or one 60W port and four 10W ports, etc. (that is, each port is essentially an independent charger sharing a housing, and with the heat limitations of the shared housing)