The 'Triple Play' is the 800lb gorilla that was overlooked
Way back when, it was fairly easy for the Cable TV companies, with their coaxial cable based network, to add Internet and Telephone services to their TV offerings. Triple Play. And they became filthy rich and arguably evil.
The telephone companies could use ADSL to provide poor Internet, but TV by ADSL on copper twisted pair was a joke (I've seen it, hilariously bad. YMMV). They have little choice but to install a fiber optic network, ideally FTTH. Then they can begin to offer TV service. Triple Play. Success. And perhaps up to Gbps Internet speed.
This is the more common story of How and Why in Canada. YMMV.
The local circumstances play a huge role. Installing fiber onto 'telephone' poles is extremely fast, and thus relatively cheap.
Downtown is very different. But nobody lives downtown anymore; too crowded. ;-)