That's not the same, the system Japan is launching is a code for your address that doesn't change even if you move. It's not a direct mapping to a physical address, it's a DB where you can change which code points to what address.

Anyway, Japan has about 50 prefectures, I don't think any one of them being bigger than the Netherlands (maybe Hokkaido) so they could have a similar system by adding 2 digits at the beginning of the code.