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And that has added to the reason that the more advanced versions of DSL have gotten to be smaller and smaller markets. ADSL (and 2 and 2+) were designed to operate within the cable lengths that the Telco networks used in their POTS design. Once you need shorter and shorter loops you have to add more and more fiber to the network. As you do that, suddenly a full FTTP build becomes more and more palitable. Think about AT&T and U-verse. If they did g.fast and eventually FTTP, they will have done 4 buildouts in access over that period of time (and I got one of the first ADSL lines from them in 1999). That could mean 4 generations of technology in one depreciation cycle.
There is an MDU problem as well. Now we would require DSLAMs in MDU basements and that the building owner allows telco access and power for them. They are not mandated to allow such access.
All of that leads to these more advanced technologies having smaller markets that they can address. Tier 1 Telcos want property wide solutions. Or at least something that is deployable across many lines. The cost to approve, deploy and maintain these sub-scale technologies just makes no sense - outside of high density housing in Asia.
The telcos have latched on to Wireless because they can sell the same bits per second for a lot more money AND they get to charge per person instead of per household. Now they are just running into families not being able to spend more on their services.