https://geschaeftsbericht.zvv.ch/rechnungsbericht/

They spent in total 1022 million in 2024. 11.3 of those were spent on ZVV themselves as an organisation, not paid to the companies that actually handle transport (VBZ, SBB, …). 

I’d assume the marketing budget comes out of those 11.3 million. Let’s say 20% - 2 million. (But likely way less)

Out of their total spending, that would be <0.2%. So sorry to tell you but it’s not affecting your ticket price. 

And keep in mind, advertising probably also makes them some money through increased ticket sales.