How many financial software companies open source their software, if you've got something that can make a business money, they won't care about paying. Many dev

How many financial software companies open source their software, if you've got something that can make a business money, they won't care about paying. Many developers trap themselves in meager areas where the only way is down (open source or ad supported) because they refuse to learn new things and compete in domains with huge opportunity (accountng/erp, finance, electrical/civil/mechanical engineering, computer graphucs animation, medical/legal expert systems).