That's really hard to do when so much of the market is living paycheck to paycheck. Many people want to choose quality, but simply can't afford it: their dishwasher is broken and they've got to steal from the food budget or the kids' Christmas gifts to fix it before Thanksgiving.
The decline in appliance quality has the same root cause as the rise of Walmart: real wages have stagnated and regressed since the halcyon days of heavy metal gauges and fifty year motors, and people simply can't afford to pay a premium for quality.
(They can't afford not to, either; "the poor man pays twice" and all that. But when you're living paycheck to paycheck it often seems like there's no real choice.)