Honestly, if the service respects my privacy and isn't littered with ads, I don't mind paying at all. Like I wouldn't mind paying a monthly fee for services provided by Proton, for example, for email, online storage, vpn, etc. I think it's fair. There's a lot of infrastructure behind it and employees. Things don't just run by themselves for free.

But when I pay for a subscription and they publish ads as well for extra income, not only does it make my experience unpleasant, but it's incredibly greedy. And when I get charged for a service that exploits all my private data to create a user profile that can be sold and used to push targeted ads and other fake information with the goal of changing my opinion on important democratic topics, then that's when I start completely avoiding that service altogether.