That's just hosting though iirc. Docker hub is very important, but it's not really part of Docker the software. As in, you could deploy your own container registry with 0 licensing issues. They just didn't want to pay the bandwidth costs anymore, though I think they walked back on that for open source images.
Got it. Thanks for the clarity.
Not sure what "it" refers to here, but what Docker did is in no way similar to what HashiCorp did.