I haven't heard complaints about Target. So I could be wrong, but I hope competition includes competition for talent, which means better treatment of employees.
They do make you watch anti-union propaganda during orientation though.
I might be in the minority here but I feel like Amazon still has better selection in products than Jet/Walmart/Target.
I think if they want to succeed they need to have a lot more products, and have them all in stock.
Example: Yesterday I was looking for a Motorola phone. When I type it in Amazon I get G, G Plus, E, E Plus, X, Nexus 6, Z, G4 Play, Z Play, Z2 Play etc. All in stock, and with 2 day prime shipping.
Then I type it into Target.com and it has G, G Plus and a bunch of E models. Many were limited quantity.
It's stuff like that that personally makes me stick with Amazon for now.
Walmart offers third party selling but not as streamlined and its not shipped by Walmart. Just another ebay store.. If you have a problem with an order, you deal with Amazon and not the vendor.