After listening to how visa was formed and now this landmark case they lost merchants are chomping at the bit to save money on swipe fees. Bitcoin lightning payments are an obvious no brainer. It is a way better network than visa.
But I honestly think merchants don’t adopt it yet because
  1. Bitcoin still isn’t treated like cash
  2. Bitcoiners really underestimate the Amount of fraud these merchants have to deal with. Who wants to be wiped out in a lawsuit because they accepted bitcoin payments and found liable some spoof.