Shouldn't umpires be fined for the wrong decisions when players r fined for showing dissent at umps' decision?

Don't think their wrong decisions go unnoticed, India's Amesh Sahiba lost his elite panel job due to regular wrong decisions he made and today Harper has decided to step down from d 3rd match of Indo-W.I. series after making wrong decisions in d 1st test, so their mistakes get punished but unlike cricketers they pay with their rankings, so d clock ticks along for them too, for wrong decisions & they pay later and this is where DRS would help players eradicate doubtful decisions or question umpire's ability to give good decisions !!