Atomic swaps are a necessity within the cryptocurrency space. I took a look at the ETH-TRON swap page and I must say I like the way it looks: neat and easy to use. Since it's just blockchains interacting, will Jelly charge for facilitating transactions or how does it intend to be profitable?
As one of the liquidity providers Jelly can put some small spreads.
However everyone can be liquidity provider so this is not a reliable business model.
The main income stream will be from swap fees. It will be on protocol layer (smart contracts) - the fee will be 0.03% or less and will be divided between the Jelly foundation and liquidity providers.