Looking at the current state of the market they would only be able to fill that gap for a week or two, then the greed will kick in, and vega 11 would be another overpriced gpu, because AMD don't think that dedicated mining gpu are a good thing.
http://markets.businessinsider.com/...nt-views-on-crytocurrencies-2017-8-1002252838
All the mining amd gpu that were "launched " were made by third party. But I've never seen a single one in any store, same for the dedicated mining GPU that Nvidia actually made, you won't find them in any store. Apparently the resselers don't like the idea of not inflating gpu price, and don't want to order mining gpu.
It's an issue for both camp because the mining hardware make by nvidia was though for it from the ground up : optimized for mining application, and lower energy comsumption. By making them so much better than their gaming counter part, it would have helped to avoid this chaos.