You didn't ask for proof against Walmart. You asked what the issue is if Walmart and other retailers have the same pricing. I answered price fixing. Then I provided an article from the FTC about how using algorithms to base your pricing on competitor pricing is price fixing regardless of the fact that the actors didn't specifically discuss price manipulation.
I don't have direct proof that Walmart uses these algorithms, though I believe that literally every major business does. I think that any multi-billion dollar business is going to be data driven, and so would use algorithms like this. I also think that the FTC knows that this has become a significant enough problem that they are now attempting to address it.
If you want specific proof that Walmart is using algorithms to price fix with other retail competitors then that's not something you or I could prove or disprove because neither you nor I work for Walmart corporate or a regulator agency that would have access to the information necessary to prove or disprove that it's happening.
I can say that Walmart has been caught price fixing in the past and has been sued for it before, and is currently being sued for price fixing with Energizer and Duracell.
A lawsuit has been filed alleging that Walmart customers may have overpaid for Energizer and Duracell batteries—and attorneys want to hear from people who may have been affected. Learn more.
www.classaction.org
On April 28th, 2023, Schneider Wallace Cottrell Konecky LLP filed lawsuits in the Northern District of California against Energizer Holdings Inc. and Wal-Mart Inc. The complaints alleges that Walmart and Energizer violated federal and California antirust and consumer protection laws by entering...
www.schneiderwallace.com