At least spell your American centric ideas properly. The "world", which in my thinking is the planet earth, not the US, does not believe in Santa Claus or have him coming to their place as the majority does not celebrate Christmas.

So he does not brEak into houses and he definitely does not do that to "over a billion" houses.

I'd actually be fascinated if a fat man who was invented by an American company would be able to use a chimney to get into our 21st century house (since we don't use a chimney as we have a heat pump)