name='Wicked Lady']Most bands shuffle around at some point whether it's because a member dies, they drift apart or the personalities can't (or won't) work together. Sometimes it's a blip (a la Pete Best) and sometimes it's catastrophic to the band (like Bon Scott or Freddie Mercury). Some can find a replacement and prosper and some don't.
Some who have carried on and prospered would be
AC/DC (although I bet Brian Johnson is heartily sick of hearing 'Bon was better' after nearly 30 years),
Van Halen (Diamond Dave
was better) ,
Genesis,
Moody Blues and
Pink Floyd (see discussion elsewhere),
Faith No More,
Guns and Roses (although 'prospered' is debatable for the latter),
INXS (ditto).....oh, I could go on but I need a cup of tea.....
Some carry on and it's horrible...almost macabre....