What will incentivize miners to keep the BCH chain secure once the last BCH has been mined?

Hey all, new to the community who recently put most of my portfolio into BCH. I'm hyped about this coin and have been liking the recent projects I've been seeing. I apologize if this question has been answered before:

I know that miners are incentivized through earning bch and transaction fees which led me to wonder that once the last bch has been mined if the low transaction fees would be enough for miners to stay incentivized and keep the network secure?