I think you've strayed from the herd a bit too far here. We're talking about a retail establishment accepting cash payments or not.

You're trying to make moral comments on labor laws or something. I'm not really sure the point. Regulations to run a business can be deemed as protecting what's "right". While we can commonly agree that it's "right" to provide accessibility access to your establishment, we can hopefully also agree that if it wasn't legislated to be, then more than a few retailers would not provide them.

However, none of this has anything to do with a retailer's decision to accept cash and all of the risks associated with that.