Because, if you are going to lie and cheat to the most important person in your life, you will probably steal, lie and cheat from your employer as well.
It depends on the circumstances. Did he steal it, or did he honestly think that his position allowed him to help himself to a free lunch in the lunch room? How long was he working there, a week or a year? If the guy knew he was suppose to pay for the lunch and took it anyhow, it's stealing. If the guy is a trader, then he has the potential cost the company a lot of money if he escalates his behavior. Remember Nick Leeson? He made unauthorized trades and bankrupted Barings Bank. Those memories are probably fresh in their minds and decided to cut their losses early.
it's illegal to fire someone because you believe he divorced his wife.. it's none of the companies business. it's wrongful dismissal..it's the law. employees are now a a liability. people like Ross and many CEO think employees are 'slaves' and they own them. That is the Americans still have that owner and slave mentality and it comes to their treatment of employees. in corporate america. employees are treated like slaves and customers are treated like prey and sheep to ripped off and slaugthered and targets you know what i'm saying.
Yet millions of people would like to immigrate America. Where do you come up with your malarkey? From your friends who never have done a honest day's labor? From your college classmates who never had to worry about food on their table? From your left wing college professors who cannot make it in private industry? Likely all of the above.
https://twc.texas.gov/news/efte/pay_and_policies_general.html So Ross Perot could have fired anyone for virtually any reason.