As a small business owner having to change/update credit cards that are used monthly is a MAJOR PITA. I can only imagine businesses slightly larger than me who use their card who now have to change 20, 30 or so + accounts due to this.

If some businesses don't do this in time or catch it they could lose business because something they rely on isn't auto billed, etc.

Either way it's going to be a PITA for business owners to update.