Why do many leaders in orgnaiztion or in company have slimier behaviors and experience ?

Correct spelling is needed. I assume you mean:

"Why do many leaders in organization or in company have similar behaviors and experience?"

That is called "job requirements". The job requires certain behaviors. Whoever hires a person for a job will carefully consider his habits and sometimes his wife's habits to be sure they are the habits needed for the job. For example, executives are often expected to attend parties, but nobody wants an executive whose wife gets drunk at a party.