A couple of years back, the average fee for an Ethereum transaction was around $0.05. Even if the Berlin hard fork manages to reduce the transaction fee, I am not expecting a very big reduction. At the most, it may come down to $5. Even at this point, making deposits in fiat is far more profitable than doing the same using Ethereum, especially for smaller amounts. So IMO, the Ethereum Berlin update will have only a minimal impact on the gambling sector.
It is such a shame, I really thought that the Berlin upgrade could bring some relief to the ethereum network and many people are complaining this is not the case or at best its impact is minimal, I get that ethereum is at its ATH right now but many people expected for the price of the fees to go down substantially and this is not something that has happened and at this rate it is not something that we should be waiting for as the upgrade seems to be ineffective and will not reach its stated goals.