I think you are vastly underestimating how fast trends in the market come out.
USB-A was two years ago.
We're currently in the "having tons of dongles" state. In a year, it'll be 50% USB-C 50% other stuff. In 3 years, it'll be 100% USB-C, with high probability given the current market trends. Even Apple is adopting the USB-C standard. That speaks volumes to the coming trends, and how fast they're coming.
USB-A was two years ago.
We're currently in the "having tons of dongles" state. In a year, it'll be 50% USB-C 50% other stuff. In 3 years, it'll be 100% USB-C, with high probability given the current market trends. Even Apple is adopting the USB-C standard. That speaks volumes to the coming trends, and how fast they're coming.