No I meant during the initial reveal and all that. The systems had it but I don't think there were any devices using it yet when they introduced it. To me it seemed Apple was putting the cart before the horse just a bit there.
What else is the solution to improved connection standards? Wait for product to use a standard that has nothing to connect to? Those don't exist - every standard is incorporated on SOME system first as a "cart before the horse" thing. That's how you make it available for other devices to utilize in the future. First generation ports on the computer tend to have a sparse collection of end-devices.
Nothing used USB when it was first revealed, it took a little while for devices to start using the standard. Once it's there, new generations are actually the exact same way. USB 3.0 devices came slowly, sometimes not at all due to a lack of requirement for that bandwidth increase. USB 2.0 devices came slowly after first reveal. You could sometimes buy a computer or motherboard with a new revision of a port standard, or a new port standard entirely, and possibly never have a need to use it until you get a replacement, and sometimes not even then.
USB did spin up faster in usage simply because it replaced PS/2 for many users. Comically enough, today you still have PS/2 holdouts for keyboards! It can actually be beneficial to use a PS/2 connection, but basically only if you need N-key rollover for crazy keyboard-centric gameplay where Actions Per Minute rule.
USB is now THE peripheral standard, and will be around at that level for a long time. Eventually 3.1c universal connectors will be more favored, but the standard remains. Almost every other standard is vying for a different market, mainly high-speed external data storage, dock-style connectivity, audio DACs and A/V production equipment, transfer of video, and in the near future, external GPUs that aren't bottlenecked and are retail-ready.
Thunderbolt 3 will have access to 4x PCIe 3.0 lanes. Which is 8x PCIe 2.0, and ultimately means it is plenty for most users and should be great for those who use professional GPUs, though it may bottleneck the current top of the line cards or the next generation if not now for gameplay.