Because the externalities are completely hidden from them, and because their own situations are precarious enough that they have no real choice but to choose the cheapest options.
Make it clear at the point of purchase all the negative tradeoffs made to enable that Low, Low Price, and some significant percentage of people will choose to buy things that cost more.
Make sure that everyone—yes, everyone, no exceptions—has a decent amount of disposable income on a reliable basis, and that percentage will grow a lot more.
No it will not. Larger incomes are only larger because of industrial machinery, the same process that makes it more expensive to buy "organic' is what drives income up.
Software engineering is so well paid due to these dynamics.
Make it clear at the point of purchase all the negative tradeoffs made to enable that Low, Low Price, and some significant percentage of people will choose to buy things that cost more.
Make sure that everyone—yes, everyone, no exceptions—has a decent amount of disposable income on a reliable basis, and that percentage will grow a lot more.