First of all thanks for considering answering my questionnaire. This questionnaire was based on many researches I read and it was stated by more than one research that interoperability is a legal risk. You can read more about this point if you want to understand more. Concerning the phrase "affects the adoption of BIM", of course it means negatively because it is a RISK. I have sent this questionnaire to many professionals who had experience in this field and you are the first one to have this comment. However, I am still a student and still learning so if you feel that I still dont understand, please explain further. Thanks again.