I'd say Netflix as it stands today. Not enough differentiation, and their catalog continues to skew more and more towards Netflix Originals which constitute a pretty "mixed bag" IMO. If they continue to drop more and more "external" content, which more often makes up the stuff I go in wanting to see, I could see cancelling their service.

OTOH, if they keep producing enough of their own content, that is good enough, they might keep me around. For example, if they come out with another show as good as, say, Bojack Horseman, every so often then I would likely keep my subscription.

Time will tell, I suppose.