News for hackers. Stuff that matters.
Re:EU fines Mastercard more than half a billion euros by spdionis on Tuesday January 22, 2019 @11:52AM (#18969667)
> easily replaceable service

> to compete you'd need an entirely new card system that would be incompatible with the others, and thus your card would be unusable in most places

That's basically the definition of hard to replace.

Re:EU fines Mastercard more than half a billion euros by MagnumOpus on Wednesday January 23, 2019 @08:45AM (#18978006)
Technically easy to replace but a hard-to-displace monopoly (duopoly) solely due to network effects. Like Facebook, eBay or WhatsApp in the tech space.