I'm not getting the humor. Are they saying you shouldn't worry about the iPhone or Kindle squeezing the other out of the market? If that's the punchline, it fit

I'm not getting the humor. Are they saying you shouldn't worry about the iPhone or Kindle squeezing the other out of the market? If that's the punchline, it fits entirely in the title. You don't need three screenfulls of random sarcasm to clarify for the slow kids that you're joking.