That’s true, and Japan does have a workers shortage, but unfortunately they are planning on meeting that worker shortage by building robots.
In fact they have already deployed robots in places like airports and restaurants. You can occasionally see them depending on where you go.
One thing I would like to refute however is that housing costs in Japan are quite low compared to the United States. You can buy a house in Tokyo for less than you can buy a one-bedroom apartment in New York or the Bay area. Houses in the countryside are way cheaper.
There are literally millions of vacant houses in Japan right now that are being maintained by family members or neighbors. They are literally boarded up and you can buy them for pennies. I was just in Japan a month ago and in one town near Tokyo, over 50% of the houses were vacant.