I question this idea of history writing and it being a huge problem. How far down the chain could a 51% blockchain rewrite occur before consuming all of the co

I question this idea of history writing and it being a huge problem. How far down the chain could a 51% blockchain rewrite occur before consuming all of the computation power of the universe? I have seen arguments in which the 51% steals all of the new coins but how long can that be maintained, the other 49% needs to pay their bills and audits would inevitably out the bad players. Eventually, the last bitcoin will be minted, making the whole issue mute.