Proprietary Incompatibility
Nonfree (proprietary) software is very often malware (designed to mistreat the user). Nonfree software is controlled by its developers, which puts them in a position of power over the users; that is the basic injustice. The developers and manufacturers often exercise that power to the detriment of the users they ought to serve.
This typically takes the form of malicious functionalities.
One of these malicious functionalities is the deliberate incompatibility of a program with third party software that operates on the same data types.
A fairly common sort of incompatibility is the use of secret formats or protocols. This directly blocks or hinders users from switching to any other program—and, in particular, from switching to free software which can liberate the device the software runs on.
Apart from being deliberately anticompetitive, secret formats put users' digital data at risk. For instance, retrieval of old data will become very difficult if support for the proprietary software that can read it is discontinued.
Another sort of incompatibility occurs when a system makes some important operation which would be necessary for migrating data to any other system so cumbersome or so slow that it isn't doable for more than a small amount of data.
More generally, the major tech companies tend to impose artificial restrictions on the interoperability of their products to monopolize the market, and this is often achieved through proprietary malware.
If you know of an example that ought to be in this page but isn't here, please write to <[email protected]> to inform us. Please include the URL of a trustworthy reference or two to serve as specific substantiation.
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2023-11
Chamberlain Group blocks users from using third-party software with its garage openers. This is an intentional attack on using free software. The official garage opener proprietary mobile app is now also infested with ads, including up-selling its other services and devices.
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2018-03
In MacOS and iOS, the procedure for converting images from the Photos format to a free format is so tedious and time-consuming that users just give up if they have a lot of them.
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2016-05
iWork (office software that runs on MacOS, iOS and iCloud) uses secret formats and provides no means of converting them to or from Open Document Formats. iWork formats have changed several times since they were first introduced. This may have had the effect of thwarting reverse engineering efforts, thus preventing free software from fully supporting them.
iWork formats are considered unfit for document preservation.
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2016-02
A pacemaker running proprietary code was misconfigured and could have killed the implanted person. In order to find out what was wrong and get it fixed, the person needed to break into the remote device that sets parameters in the pacemaker (possibly infringing upon manufacturer's rights under the DMCA). If this system had run free software, it could have been fixed much sooner.