It has happened; just look at how the computer manufacturers consolidated when off-shore production took the bottom out of that market.

Really, anytime a major player has cash on hand, they're going to buy out competition, either through acquisition or buying an equivalent product. When Oracle had liquid assets, they buy Sun. ATT and Verizon consolidated the cell phone market down to ATT and Verizon (and even attempt to merge down one step further). DeBeers buys every diamond producer on the market.