Which is why the "cheap" products are important. Without them many people would not have access to a wide variety of goods.
And also, and I keep repeating this, if there even are options.
The problem with voting with your wallet is the same as the problem of voting in a typical western democracy. You never get to vote on a feature/issue in the abstract; you can only choose out of what's available on the market/ballot, and that's always a very large bundle of features/issues, so you have to make trade-offs when voting.
For instance, I very much want to have a replaceable battery in my smartphone, but my current one doesn't have this feature. That's because I had to choose a whole bundle and the replaceable battery lost with considerations like "won't turn into unsupported and underpowered garbage in 2 years", "still has audio jack", "support SIM cards" and "I trust the manufacturer". There's no way for the market to pick up on my preference for replaceable batteries here.