[Wuli]

That’s fine for folks with a “smart” TV and Internet access for it, or folks who don’t mind watching TV on tablets and cell phones (not me). But smart TVs are only 32% of US households today, so your solution is not a general solution for most cable and satellite TV subscribers.

[ConservativeMind]

You don’t need a smart TV to use HBO Now on your older television. You do need consistent Internet, but only need 1Mbps for standard definition TV.

https://www.consumerreports.org/broadband/internet-fast-enough-for-streaming-broadband-speed/

Look at the graphic partly down the page for speeds needed for HD and 4K.

My mother has an eight year old ROKU that uses wireless to her non-smart TV.