But what is good news for consumers has been a nightmare for manufacturers of TVs and retailers that sell them. The earnings of mainstay television manufacturers like Panasonic, Toshiba and Sony have been hammered. Sony, for instance, is overhauling its television operations because of what one executive said recently was a “grave sense of crisis that we have continued to post losses in TVs.” Even newer and more nimble competitors like Samsung and LG have struggled to make much money on TVs, if any.

Seeking to stanch its losses, Sony on Monday said it would end its flat-panel joint venture with Samsung, which was set up in 2004 to capture the boom in televisions with liquid-crystal displays. Samsung, based in South Korea, will pay about $940 million for Tokyo-based Sony’s 50 percent stake; Sony aims to save on manufacturing costs while still buying panels from Samsung.

For retailers, the picture is not much better. This month, Best Buy reported a 29 percent drop in net income for the third quarter, in part because the retail chain had slashed prices on televisions and other electronics.

Perhaps even more ominously for the long term, the future of televisions appears to be more about what content they can provide, like Netflix and iTunes, than new hardware features like flat screens or 3-D technology. It is an area where television manufacturers have struggled with little success to get an edge, even as Apple and Google vow to upend the industry.

“Everybody is fighting for a limited amount of consumer dollars,” said Gregg Richard, president of PC Richard and Son, which has 66 electronics and appliance stores. “We are selling more TVs, more units, at lower retail prices.”