I agree, having lived in both the UK and Switzerland. If you can justify the cost, the GA in Switzerland is incredible and works for most trains, buses and boats in the country (the exceptions are usually private touristy rail routes that go up mountains). People can and do commute from Geneva to Zurich in a day and have mobile data the whole way.

Outside of London, UK public transport varies greatly in quality and all of it is very expensive and overpriced. UK season tickets for lines outside of London typically involve a fixed route on one operator and usually only support commuting: one there and back journey 5 days per week max. By contrast, the GA in Switzerland really is unlimited. It will work equally well for boats crossing the lake in Geneva as it will for the local trams in Zürich and the train to get you between them, even if you travel on a Sunday. It doesn't matter if you present it to cantonal transport people, or private train operators, it will work, no arguments. Pretty much the only people not part of the GA scheme are tourist train routes up mountains, and to be honest, that's fair enough - staff to the facilities on the top likely get a free ride up anyway and nobody else needs to commute to the top of the Jungfrau.