Yes correct. There are many websites that even offered negative house edge in your favor. And players still ended up losing, they had to remove it when they added API because people coded bots and they had to remove the negative house edge then due to combat cheating.
I think they give a tagline that they choose house edge is zero or negative I think it was just to attract the players to want play on their site, because if the house edge on their site real zero certainly their gambling site have lost because players would always win right ? so I think there is no stupid gambling sites that actually give a zero on the edge of their gambling sites, come on dude gambling will definitely give the risk of losing
May be some site that based on blockchain games will have this 0% of house edge though because we never know the outcome of blockchain hash or the tx id. For example like bitcoinbetting,it said that their sitr have 0% of house edge so I think it is still possible for site to make some profit because we cant calculate the outcome of the exact number of blockchain though
it is a fact that every on-chain based games are having 0% house edge ,
that is why there very few gambling sites do this ,
the calculation for the owner to have an advantage very low ,
better to build a dice site which almost guaranteed for the owner to get profit.