I recently tried setting up another mining rig but found out all the profitable GPUs are no longer available at all local stores in my country. According to the distributors, people have been buying GPUs in BULK since April 2017.
At this rate, can GPU mining still be profitable long term? 1 year from now? 3 years from now?
In such a scenario it is likely that we will see the mining difficulty increasing sharply, but if there is also a price increase, mining could remain profitable for over a year. The problem is that most of these alts are in a bubble, and it brings the risk of big losses to miners.