it is possible, if wages dont increase to cover the dues theyll end up making less. whether this is good or bad for them will end up dependong on whether the union is focused on the success of the employees, whoch depends on the wuccess of the company or if yheyre just thete to fill their own coffers.
This is just something you’ve made up. There’s literally no reason to think wages won’t go up, nor that they will somehow make less than they do today. Why do you think this? What source are you looking at? I cannot fathom how you would come to these conclusions without you mostly ignoring evidence (I’d be happy to be wrong).
