WouldBe
Dislicksick
You could provide your own adapter or how about the manufacturer including a USB C to USB A cable with the device so you can plug it into existing USB A power sockets.Won’t work for lots of devices because the power requirements can be up to 100w on usb c. Your suggestion would work for small devices, but on planes and trains they need to be incredibly hard wearing, hard to steal and if near a standard plug can’t block the plug working.
According to this Deal on common charger: reducing hassle for consumers and curbing e-waste | News | European Parliament laptops get a 40 month delay from autumn 2024, so that’s spring 2028 for laptops.
Alex
As to the power that can be delivered if a phone can manage on a USB A cable and socket at the moment it won't need the extra power capacity of USB C so will be fine with either an adapter or adapter cable.