The biggest disruptions come at the lower end of the market, something far harder to track. In the '50s, Westinghouse and RCA were some of the only manufacturers of this new technology. Now there are dozens of companies making TVs. You can get a great TV now for less than $0.50-per-square-inch of screen. That's an old trend, too. As new manufacturing powerhouses come in, they aim for the bottom of the market. They first offer something inexpensive, then later, something inexpensive and good, then eventually something good and expensive. It happened with Japan in the '70s and '80s, it happened with Korea in the '90s and 2000s, and it's happening now with China.