Presumably there are legitimate concerns from the company relating to liability over third party use of the software. There may also be issues over third party

Presumably there are legitimate concerns from the company relating to liability over third party use of the software. There may also be issues over third party commercialisation. Firstly, what was the licence if any attached to the software when it was first released via Github, if any? Secondly, if it was one of the frequently used open source licences there would be a general provision in there relating to exclusion of liability. Also depending on the licence commercialisaition may be restricted. I would say overall you first need to get a handle on what the concerns were and also how appraised legal are of the situation. Once you've done this you can then take steps to identify a suitable licence which would address those concerns. Presumably if budget is limited they don't want to be in a position where they are drafting a licence from scratch. As mentioned you can help in this by taking a suitable licence to them. In any event, good luck! Feel free to email me of you have any questions although I should point out that the suggestion to go to EFF/FSF is an excellent one.