That wouldn't necessarily affect consumer behavior but it would affect what strategies corporations are able to use to service that behavior.
Is that what you want? If you do, that’s fine, that’s a fair enough perspective, but understand that you are probably making it harder for people with less money. Same goes for Walmart.
Yes they will be higher. Other companies that don't treat employes that badly, whether out of goodwill or due to being in places with more regulations, will be more competitive.
I also think that we need more progressive taxation and social benefits which would offset some of the price increases.
We are able to provide both good working conditions and a living wage to all people. We can afford it.
But like someone else mentioned, there are countries where Amazon has to pay minimum wage and it works just fine. I think we as consumers have the responsibility to vote with our wallet but we as society have responsibility to put boundaries into laws to prevent abuse. So in my view consumers, suppliers and legislators are at fault.
Otherwise amazon (or Walmart) wouldn’t exist, because everyone would support their local store. But they don’t. Prices matter.