[vmception]

the point is that the user experience is not accurate so no rationale for it is relevant either

many merchants take 0 confirmations with payment processors

or use lightning network

or use a faster blockchain

[flatiron]

If you take 0 confirmations you will get what you deserve.

For the others I have no comment as they aren’t currently viable.

[vmception]

Yeah no different than a merchants other electronic payment solutions except maybe being cheaper for the merchant