I am pretty sure that the main reason a lot of folded start-up companies, killed projects etc. do not just open source their code is 'code pride' in some form.
No one wants to publish a 'hack' to the scrutiny of a elite community of programmers, and for some companies just cleaning up the code to the standards the community expect would cost a lot of money.
No one wants to publish a 'hack' to the scrutiny of a elite community of programmers, and for some companies just cleaning up the code to the standards the community expect would cost a lot of money.