It's not that the Japanese aren't housing enthusiasts. They really are. Some of the best designs in FFXIV housing constantly are coming from Japan. The difference is literally the server populations for most Japanese servers are so much lower than most of the NA/ EU servers. Most JP servers that I've visited have a decent amount of housing available in Goblet, often with multiple mediums open and occasionally a large (new character, started in Ul'dah, only done the quest to look at stuff from Ul'dah's aetheryte since Lav Beds requires lvl 10). It just means the Japanese fans aren't facing the same housing crisis we are. They're at the stage we were like 2-3 years ago, where Balmung, Gilgamesh, and a few other super large servers were the only ones with a huge housing crunch.
You can claim that people shouldn't have to jump servers to get housing, but I'd also argue that people shouldn't constantly make new characters on over populated servers. It's a double edged blade. If you want the heavy population, you need to realize that means you're going to have a rough time getting a house with the ward system currently in place.
Personally, I'd love to see wards kept as well as an instanced housing system put in. I'd love for every character created to be able to buy a house if they want (even characters on the same account) without it taking things away from anyone else. That's not what we have currently. Hopefully it's what we'll get soon.