The Walmart today has more 22 ammo than they have had since it disappeared off of the market years ago. About 5 different brands. Also about the Remington deal, if you remember years back the finance industry tried to shut down the gun and ammo manufacturers by not loaning the money that they needed to operate or financing anything new that they wanted to build. This just might be the start of all of this happening again.
Perhaps where you are. There isn't a Walmart you can walk into within 50 miles of me that doesn't have a sign on the counter stating they have no .22 for sale. I don't have any problem getting them now, most gun shops at least will let you have a few boxes or a brick now and then. I've been ordering most of mine online from Cabela's when they have a sale just so I get them easily. I've always kept enough ammo to not panic if there is a shortage, and still be able to shoot some. During the shortage, I was able to pick up enough to replace what I would use, and have a day out with the grand kids every 2 or 3 weeks (even in .22).