What will determine this is actually miners and how profitable it will be on the different bitcoin networks. 

Like I said a month or two ago, the next 4 years will be very interesting. 

BTC will have to fill txns in order to cover mining costs I place of block rewards. 

BTC needs to get to a higher price per coin in order to pay out the miners at the same or more. 

Look into it
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 Miners don’t determine what Bitcoin is. Miners serve at the pleasure of node operators, who reject bad blocks with prejudice.

If it’s more profitable for miners to mine corp-chain, that’s fine. There are lots of things people do for money other than mining for Bitcoin.