It is the lack of planning to prevent it that is years later branded as a feature to sell when company leadership looking to boost numbers or build political capitol start talking to law enforcement. Often after an acquisition or two.
I personally know a release engineer that was required to quietly send all new code changes to an NSA ftp server, presumably to make sure none of the bugs they rely on were fixed.
If something is in popular use and -can- collect data covertly, it will be co-opted to do so by someone for power or money without fail.