This is a tricky subject. I think hash power won't win in the end if the users will pay more for a ABC coin. We saw this with BTC and BCH. History will repeat itself I think.
Right, you can pay more for the ABC coin, but it won't be delivered.
what do you mean? ABC = BCH or the ABC chain will be killed?
Any block that has ABC specific transactions in it will be orphaned, these transactions won't ever be confirmed.
