He could also hit the limit downloading a single image, if I'm understanding his situation.
If I'm an infrequent tinkerer that occasionally needs docker images, I'm not going to pay a monthly cost to download e.g. 1 image/month that happens to be hosted on Docker's registry.
(It sounds like you can create an account and do authenticated pulls; which is fine and pretty workable for a large subset of my above scenario; I'm just pointing out a reason paying dollars for occasional one-off downloads is unpopular)
If I'm an infrequent tinkerer that occasionally needs docker images, I'm not going to pay a monthly cost to download e.g. 1 image/month that happens to be hosted on Docker's registry.
(It sounds like you can create an account and do authenticated pulls; which is fine and pretty workable for a large subset of my above scenario; I'm just pointing out a reason paying dollars for occasional one-off downloads is unpopular)