Ryanair as a brand is about taking people cheaply and efficiently on short haul trips in Europe. The brand of Ryanair is being stretched too far - there is too much risk of a nacklash both from the USA where online gambling is very tightly controlled or other culturss which disapprove of gambling.
True but as Ryanair doesn't do any flying to the US then its pretty irrelevant what the prevailing Govt sentiment is there, in the same way that Mecca bingo halls are irrelavant to what the Saudi's think.
Not sure there is any EU country where gambling is banned, mind you given the state of finances of most EU countries it has been the Govts doing the gambling rather than the population.