Because most politicians are corporatists regardless of party.

It’s pretty simple. They can pay workers what they deserve or:

1. Workers strike until the company is bankrupt.
2. Workers or other investors buy up factory at a discount
3. Same workers come back and get the wages they deserve under new company

For other things, Amazon is just paying a higher price for the goods due to tariffs, but they are not the one paying the tariffs and thus could not be the one to refund them.

The supreme court disagrees with you. Otherwise businesses wouldn’t have the option to seek a tariff refund: https://www.cbsnews.com/news/how-to-file-for-tariff-refund/