The unfortunate thing that kicked off this discussion was that you talked about "...[selling] software IP...". Thanks to active work by copyright maximalists [1] over the past 20+ years, the term "Intellectual Property" applies just as well to plug-and-chug Enterprise CRUD software that sells for megabucks as it does to leading-edge research projects that -like- actually have Key Personnel and die dead if those folks go away. Anyone who is capable of paying attention and has been in the industry for more than a year or three is quite aware that plug-and-chug CRUD is far more valuable than the overwhelming majority of the people who make it.
So, yeah. From that arose the confusion.
[0] ...and because I can't be arsed to go look it up...
[1] My position in brief: copyright and patents are absolutely essential, copyright terms are insanely long, and patents frequently granted when they should not
I think the third statement is a bit personal so will leave that alone.