Many folks resort to LTE or WiMax to compensate, which has poor performance in general and even worse in poor weather.
For context, even in Tokyo, you would be surprised at the number of apartment buildings that come with shared 100Mbit lines for 30+ units, with no way of installing faster direct lines (in large part due to owner/agency refusal).
If you’re desperate find a place that already has or allows Sony Nuro installation. They lay fibers given owners’ permission, whereas NTT won’t and just send you a Fast Ethernet VDSL modem(with a blue Cat.5 8P4C cable to match!)
This is almost always the owner/agency actually. The above discussion is in context of being the owner.
NTT networks are extremely congested, so speed you get will be either just ok or bad.
This is all applicable to greater Tokyo.
Needless to say, 4G is nothing of impressive with spot coverage, if you go mountainside.
That's one 0 too much as long as we're talking residential/"family". Or you'd have to provide sources/quotes.
I just had fiber installed (no previous connection here or to the closer neighboring houses) in a small house in a rural area. It was indeed 1.5 months of waiting, but the costs are 10% of what you're claiming.