Less breathy than usual but still characterised by stating the bleeding obvious while leaving out important qualifiers.
The report cited refers to US households and these are not the same as the rest of the world: for one thing average broadband speeds in Europe are > 16 Mb/s
4k will succeed only if the programming becomes available. This will be possible for films, many of which have been produced digitally in similar resolutions for years now. But films aren't enough. In order to create significant consumer demand, sports programming will have to adopt the new format. AFAIK Sony was trialling 4k at the world cup. Presumably the results are being analysed to see whether studios are prepared to make the necessary kind of investment (cameras, studios, multiplexes, satellites, etc.) to offer it.
Inasmuch as the technology for the chain has not yet been finalised (HEVC and VP9 are both still in development) it's a little early to expect a major shift yet.
But the screens are a by-product of the ever higher pixel density of our handheld devices and as such will enter our homes in the replacement cycle as our current generation of tellies will probably need replacing sooner than the last - our first colour telly lasted around 25 years, the second around 10.