Unlike in 2014, the question is no longer "Will people drop cable TV?" but rather "How many people will drop Cable TV and how quickly?". Cable operators are constantly looking for channels with low viewership or no original programming to drop as more content moves online and to on-demand tiers. Even cable operators that also operate cable channels (Comcast) are dropping networks that have lower viewership to stop (as much as they can) programming costs from rising more than they have to.
It's even gotten to the point that Comcast has started introducing packages that include Netflix, and likely won't stop there. I am not saying that cable isn't convenient, but it becomes a value proposition for people that don't watch much TV, or that don't watch sports. Why would I pay $100 to watch 4-5 channels (on their schedule, with commercials unless I have a DVR) when I can get Hulu, Netflix, Amazon, Disney+, and CBS All Access for LESS where I am able to watch things on my schedule at higher quality, with no commercials?
Now, I know some will say it doesn't work for them for whatever reason, but I would argue that, for the vast majority, it does work. Cable TV's value is having the widest variety of content for one price, but I think over time, as consumption patterns shift, people will be happy with 1 or 2 streaming services at a time, binge what's on them, then switch the service.
Brining it back on topic, I don't think WGN America is long for this world. No original programming, less and less carriage every year, and no compelling reason to seek them out. (And for the record, I don't think this only applies to WGN America, I think most cable-exclusive content providers will cut at least 1 linear cable channel in the next 2-5 years).