That's only because those tax deductions are often accepted. If one can write off an entire holiday home with a reasonable chance of success, say 80%, then you'd be crazy not to try. If countries don't want that, they should change their laws.
In some higher tax countries, a lot of things are technically allowed, because that way they can tax "the little man" a lot and not tax higher earners as much (i.e. doctors, notaries, high earning entrepreneurs, etc).
In some higher tax countries, a lot of things are technically allowed, because that way they can tax "the little man" a lot and not tax higher earners as much (i.e. doctors, notaries, high earning entrepreneurs, etc).