who settles degens markets?
if degens settles their markets how is it non custodial?
Liquidity is trivial to acquire if pulling accurate real-time odds is possible. On the Degens Betting Exchange, most users use this automated market making code which makes it easy to provide liquidity as an real time odds source is included - https://github.com/degensprotocol/degens-mm
So for no cost, and no access to 3rd party real time odds data, you can be a market maker on Degens if you run the above code.
There is an oracle that grades most events through an API and then that result is confirmed by a multisig of real people at Degens.
It is non custodial as your funds are never in the custody of Degens, funds are escrowed in a publicly auditable smart contract. This compares to Fairlay where you deposit funds into their custody.
That said if Fairlay's commission structure is as cheap as you say, 0.1%, then for the vast majority of users using Fairlay is the logical choice as the risk of them exit scamming is tiny since they are the OG in this space.