I sat on a tram and watched passengers board. Many did not buy a Metcard or validate an existing Metcard. What are you doing about fare evasion?
Your experience does not necessarily mean all of the passengers you observed were not carrying tickets. They could have been carrying valid tickets from another earlier journey and simply did not re-validate when they boarded. Yarra Trams has an effective fare compliance program with Authorised Officers working from first to last tram, seven days a week across the entire tram network.