If Spectrum (or anyone) decides to sunset cable card devices, they must have data showing that a majority of their TiVo customers will just sigh and convert to using one or more cableco supplied set top boxes (and its monthly lease billing).
Or they're just being stupid. Sometimes it's difficult to tell. How can you assess the sanity of a service that keeps shedding subscribers and compensating to appease shareholders by raising rates on those who remain, driving even more of them away? I wonder if Netflix, who is now threatening to do the same, is paying attention.
Either way, if they dump cablecards I will no longer use their cable TV package for which I am currently paying about $150/month (plus $75 for Internet). I will keep the internet, but their $1,800 annual revenue from my cable TV use will be gone. I can get all the streaming services I can eat for $1,800 a year.
I've been staying with them mostly from inertia and the familiarity and ease for me and my family of having used TiVo products for about twenty years (currently a Roamio Pro and four Minis), but that would push me fully into the "I stream everything now" camp. I already own enough streaming hardware that I don't need to buy more (for now, of course).