So we want to make payments via our phones. My first thought would be to create a protocol for this. Instead we get ApplePay and GoogleWallet and whatnot. If the internet was invented today, we would have AppleMail instead of email and GoogleTrans instead of http.
You had CompuServe mail, and Prodigy mail, and AOL mail, and any number of internal mail systems at different companies. There was not a single mail format or agreed upon address space. Getting mail from one system to another was a huge pain.