Alcohol sale in Europe

Why is it in, Spanish, Italian and French supermarkets there is such a different approach to alcohol sales.

Lots of spirits have promo items with the purchase compared to supermarkets in Britain where if you bought a bottle of Bacardi with a branded glass it would become a gift set, and then more expensive….

I’ve also never seen the supermarket merchandising style in Britain similar to the gin pic which was in Portugal.

I imagine the spirit and beer co’s produce lots of merch and would happily fund a set up in every Tesco store for example. I guess floor space being a premium is an issue but surely given the foot traffic it would be attractive and generate revenue.

I’ve read through the regulations on alcohol sales and marketing but to me the details seem light? The regulations seem to state in England and wales you can have promo islands, and gifts, as long as they don’t appeal to children.

Interested to know more if anyone has intel and curious whether diageo and others try to court / lobby supermarkets to change tack