Right now, it still falls under the typical cable bundle pricing. However, there is definitely a finite supply of good actors, writers, and directors in Hollywood (demonstrated by the quality of recent releases). Netflix is also competing with gathering attention as a whole, so the growth of podcasts, Instagram, YouTube, or Twitch eat at the value of Netflix's all you can eat buffet style approach.
The two wildcards are Apple and Amazon. I don't see either company competing directly, but they could lower the cost of customer acquisition (especially internationally) for HBO Max, Comcast, etc. and take a cut of the subscription. If that doesn't work, I think these other services will have a hard time competing internationally outside of Disney.
I don't think many people will cancel Netflix, but right now, it seems the content needs and costs scale in proportion to subscribers, which isn't ideal for them. I could see Netflix struggling over the next couple of years, but Comcast and AT&T struggling, even more, to get their services off the ground. At that point, perhaps AT&T and Comcast go back to selling content to Netflix, or perhaps Amazon buys up the content rights cheaply after everyone else is decimated.