Mature Market
The PC market is a mature market with most sales being for replacement kit. Eventually the sales will reach a sort-of steady state of units. There will be a few mass market sellers (Dell, HP, ?) and several niche markets (Acer, Lenovo, ?). The PC market will resemble the automobile market, a few very large international players who sell to the mass market (Ford, VW, Toyota, etc) and several niche players (BMW, Mercedes, etc). Properly managed they all can make money but the heady boom days are long gone.