0% edge can work as a model but not without the rakes and commissions,,, zero everything in your title is simply not possible as a business model, unless you strictly run poker competitions, and earn from advertising, sponsorship and fees (but nobody likes to pay fees, they do not mind commissions or rake though).

Also, as user above posts, if it is on-chain, you pay miner fees. If the tokens like Edgeless are cheap, players do not feel the pinch, but nobody likes to pay extra costs every hand they play.