Plenty of companies sell proprietary software: Microsoft, Apple and Oracle, for example. And many companies, such as Red Hat and IBM, make money by selling support, hosting or consulting for open-source software. But what’s less known is that companies can release their software as open-source while also selling a commercial version of the same product.
“If you own the copyright, you can do whatever you want,” says Lawrence Rosen, an intellectual property attorney with Rosenlaw and Einschlag. “You can license it to person A under one license, and to person B under another.”
Read full article at CIO.