They did that for years, just not as much these days. Visual Basic was an outside product/demo developed by Alan Cooper. The infamous Visual Source Safe [0] was

They did that for years, just not as much these days. Visual Basic was an outside product/demo developed by Alan Cooper. The infamous Visual Source Safe [0] was originally sold by One Tree Software in Raleigh (the word "Visual" was added by Microsoft) [0] Microsoft's own source control product that it replaced was Microsoft Delta. Believe it or not, Source Safe was a major improvement over Delta.