Cannot help but notice that, had Microsoft offered such a sweet deal, this place would've been ablaze with cries of "Embrace, extend, extinguish" and suchlike. (This still regularly happens, e.g., when new Github features are announced). Perhaps even justifiably so, but the community has failed to apply that kind of critical thinking to any other company involved in open source. If your workflow is not agnostic wrt where you pull images from, it is kind of silly to blame it on Docker Inc.

Having said that, it is definitely a problem for many. I work at a technical university and I am sure colleges/research institutes will hit the limit repeatedly and easily.