First, they build programs with open source. Then they build their business with open source. Then they abandon it and cash out. Essentially, all software is built using open source. By Synopsys' count, 96% of all codebases contain open-source software.Lately, though, there's been a very disturbing trend. A company will make its program using open source, make millions from it, and then — and only then — switch licenses, leaving their contributors, customers, and partners in the lurch as they tr...