It's literally not. Maybe if you'd actually experience the situation yourself here you'd know about the differences. But alas, hard to understand from the outside I suppose.
Invading a property people actively live in = The police comes quickly to throw the invaders out
Invading a property that been empty for years where the owner refuses to either rent out or sell it = Harder to get them out, for obvious reasons.
That's why in decent countries you can get them curb-stomped and their teeth kicked-in for invading a property.