@Ana1234 - I suppose people have their homes and shore rentals which cost a lot of money and they don't want to abandon them. There are definitely options as long as there is money to be spent.
I know there are definitely places where the local council just ships in a whole lot of sand every year to recreate a beach where there is no natural beach any longer.
I don't know about environmental impacts, but in some ways I think this might be a good solution. It helps to centralize beach goers so that they aren't wandering all over the country to more isolated places.