Did you say that stealing ideas is business betrayal? It becomes betrayal when that idea was shared with you on trust. But if you happen to stumble into someone else's idea and implement it faster than the person, you have not done any wrong.Betrayal is a repudiable human act in all areas of life, from relationships to work, I think that as you say stealing at work, stealing ideas, or working for example in competing companies in secret are the biggest betrayals you can commit to a company and is grounds for immediate dismissal.