This is the major (technical - plenty of political issues) problem I have with Bcash. It’s cheap and fast because transaction volumes, and price, are 10% of BTC, yet blocks are 1.5x the size (roughly, looking at a block explorer). As soon as they fill up, they’ll have the exact same problems down the line. Increasing the block size doesn’t scale long term and is a bandaid solution at best.
BTC was fast and cheap when adoption was low.