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Elizabeth Warren slammed for wanting to ‘break up Apple’s smartphone monopoly’
(www.bostonherald.com)
This is a most excellent place for technology news and articles.
As a non-American stuck with a terrible dual Whatsapp setup I can't kill due to network effects, this is true.
The counterargument is that any one platform will have this issue, so you'd need full interoperability. Except in direct messaging full interoperability is a bit of a security issue.