Proprietary software no relation Bill Gates
Proprietary software is software that is deemed within the free and open-source software community to be non-free because its creator, publisher, or other rightsholder or rightsholder partner exercises a legal monopoly by modern copyright and intellectual property law to exclude the recipient from freely sharing the software or modifying it, and—in some cases, as is the case with some patent-encumbered and EULA-bound software—from making use of the software on their own, thereby restricting their freedoms.  It is often contrasted with open-source or free software.  For this reason, it is also known as non-free software or closed-source software.Types
Origin
Until the late 1960s computers—large and expensive mainframe computers, machines in specially air-conditioned computer rooms—were usually leased to customers rather than sold. Service and all software available were usually supplied by manufacturers without separate charge until 1969. Computer vendors usually provided the source code for installed software to customers. Customers who developed software often made it available to others without charge. Closed source means computer programs whose source code is not published except to licensees. It is available to be edited only by the organization that developed it and those licensed to use the software.
In 1969, IBM, which had antitrust lawsuits pending against it, led an industry change by starting to charge separately for mainframe software and services, by unbundling hardware and software.Bill Gates' "Open Letter to Hobbyists" in 1976 decried computer hobbyists' rampant copyright infringement of software, particularly Microsoft's Altair BASIC interpreter, and asserted that their unauthorized use hindered his ability to produce quality software. But the legal status of software copyright, especially for object code, was not clear until the 1983 appeals court ruling in Apple Computer, Inc. v. Franklin Computer Corp.According to Brewster Kahle the legal characteristic of software changed also due to the U.S. Copyright Act of 1976.Starting in February 1983 IBM adopted an "object-code-only" model for a growing list of their software and stopped shipping much of the source code, even to licensees.
In 1983, binary software became copyrightable in the United States as well by the Apple vs. Franklin law decision, before which only source code was copyrightable. Additionally, the growing availability of millions of computers based on the same microprocessor architecture created for the first time an unfragmented and big enough market for binary distributed software.
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