They tried but according to knowledgeable sources, they were either too incompetent to make use of that information, somehow lost it, or as it turns out, were unable to effectively collect it in the first place. (I think it was the third)
That level of apparent stupid happened before this but remember, this is the company that laid off talented, skilled and experienced software engineers so they could exploit the H-1B visa program to bring in inexperienced foreign tech workers on the cheap and then had the gall to require that the people being let go train their incompetent replacements as a requirement for getting their severance.
This isn't a company that values their IT departments.