AMD could make 5000 - or less - Radeon VII GPUs for sale for their February release, according to sources cited in a new TweakTown report. This may be because the new 7nm cards are Radeon Instinct cut-downs. In addition, this report indicates that there will be a dearth of Radeon VII custom cards.
https://www.notebookcheck.net/AMD-will-make-only-about-5000-units-of-the-Radeon-VII-new-leak.394676.0.html