The USA supreme court has ruled, 5-4, that manufacturer price fixing is ok (technically setting a minimum price would be ok). An interesting question is who will benefit from this. The right answer might also provide valuable investment ideas. My first thought is this will help those that provide customers added value. Without price to be a factor in the decision that leaves convenience and service. I would think Amazon.com could benefit (though they would likely rather provide discount prices to gain more market share I think they will retain and even grow market share due to convenience). Also retailers like Crutchfield that provide excellent after market support should benefit. Places that people go to only due to cheap prices will probably suffer. And of course the consumer that have to pay the higher prices will suffer. Basically retailers will win due to higher prices then there is just the matter of whether they lose enough business to offset that gain (customers moving from poor service but cheap retailers to good service retailers since there is no price difference).
I also think the idea of using fixed prices as a business strategy will not be as easy as it may seem. Competitors don’t have to institute such a policy and therefore discounters could offer lower prices on their products which might then mean they don’t sell many of yours (and the retailer may just choose not to carry yours). The biggest winners might even turn out to be manufacturers that take advantage of competitors that set minimum prices (by not setting minimum prices themselves) and gaining market share.
Related: High court eases ban on minimum prices - Supreme Court OKs retail price fixing by manufacturers