I am expecting that once Bitcoin Unlimited gets over 50% of the hashing power then they will have enough confidence to attempt to win the battle of the block size. I am expecting that once they are over 50% they will start their hard fork and hence create two competing Bitcoins. Then chaos for everybody.
Bitcoin is PoW system, hash power is the law. But hostile takeover over bitcoin's network won't end well. It is no longer emergency rollback fork like ETH did.
It is forcing your will against community and minority of miners. It will be a disaster. It is stupid. They know it, we know it. It will crash BTC price and ruin BTC trust.