Unions that are run like a business eventually become a business. Unions need to be democratically-controlled, where regular workers can propose new contract terms and vote on them, as well as voting to call a strike.
Right. It’s completely unsurprising that to see corruption in groups that were forced to elect leadership that holds views contrary to the foundations of unionization (i.e. they were all but required to elect capitalists because of the communist control act and the internal security act).