This estrangement between the two brothers reminds me of Ray and Dave Davies. Originally it was Dave who was commandeering the group, then Ray came along, and the rest is history.
the same thing happened to the Fogerty brothers I believe
At the start of the the band Tom was the lead singer, but then John started to sing, and his powerfull voice was choosen for lead, and the rest is also history
I'm not sure, but I think that the Fogerty brothers also rarely saw each other.