MSRP is manufacturer suggested retail price. It is not an enforced price. For example, stores have started selling physical Nintendo games below MSRP as Nintendo has started selling digital copies at a lower price than physical MSRP. (This is also what would likely happen if games are sold cheaper. They'd compete the price down.)

I don't know if I've ever heard of a case of MSRP being enforced. I don't think it's reasonably possible. It means no sales, for example. A retailer buys a product, and then they stock it at whatever price they decide. The manufacturer doesn't control it at this point.

Edit: Also, MSRP is very different. It's from the manufacturer, not another store. The equivalent is Walmart telling a product creator to enforce an MSRP or they won't carry their product, not a manufacturer enforcing one on their own, assuming that happens.