Well, I think Bitcoin is not mandatory for payment at their stores and there are still other means of payment available there, the only incorporated another payment option which is by Bitcoin, the fees are high, so I believe it's only someone making a relatively bulky purchase that would use it.

Is not even economical to use when you have little purchases, so if anybody does not feel secured or comfortable or feel that it's not economical using it considering the quantity of retail commodity purchased , they can go for other options available that's cheaper and less risky.

The technological advancement is a good one.