Then you disagree with the folks advancing these policies! :) Their perspective is that Amazon, Kroger, Wal-Mart, and a whole host of other businesses (including things as seemingly boring as cheerleading supply companies) are engaging in anticompetitive practices that cause a variety of harms.

Depending on which case you look at, they allege different harms. In some cases they allege harm to suppliers or to employees, but in others they make the case for anti-consumer harm.

Hopefully folks won't continue to downvote me. Whether you agree with these folks or not (and I'm not trying to make their case for them here), that is what their position is. It is wise to understand them, even if we don't agree with them.