How could it be otherwise, as soon as you have found a product that you no longer want to do without, it disappears from the shelves without a sound. That usually annoys me to no end - the product was sold too little. To be honest, I can't always understand this answer.
As I can hardly imagine that it's just me, I would like to make a suggestion to Migros in this regard :)
Promotions are always announced in a big way, how about applying the same approach to the products that are disappearing from the shelves? This would give you the opportunity to fill your pantry with your favorite products and thus delay the loss.