I don't need to own a fast workstation unless I want to continuously train my models. I can, however, quickly get a cloud instance that's much larger than that and train the model at a fraction of the time and cost of a desktop workstation.
And continuously training models is very hard, practicality in RL environment, even then cloud services over long term is possibly more cost effective solution, then hosting your own small cluster (few tightly packed racks).
