They made me spend more money, which I wouldn't mind since I don't contribute to any of the subsidies public transport may have, but you can simply charge more,

They made me spend more money, which I wouldn't mind since I don't contribute to any of the subsidies public transport may have, but you can simply charge more, or consider it an investment since tourists bring new money in daily. Having the ticket would help a lot navigating around without fear of having the wrong ticket or making dealing with delays or cancellation even more frustrating.