Demonstrably false with a payment service like PayPal but could still be an option for some type of online payment. One can imagine a payment method that's transparent, integrated and seamless. Maybe something like limits can be set with features to allow, prompt or flat out deny websites that violate some payment policy.

My view is that when the payment threshold is so low, the issue is inconvenience or user friction, not the amount of money involved. I suspect people would be fine with small payments if the user experience was better. For example, Amazon, Netflix, iTunes or Spotify.