Sure, let everything require that you pay upfront for everything. Those too poor to afford to pay don’t deserve to have access to it anyway, right?
I’m not saying that ads are good, but having an option for people to pay to access a service that isn’t directly tied to money they have accessible seems better than barring them from that access. At the same time that option cannot be too intrusive or otherwise be too much of a negative before it becomes predatory. We can wish for the world to be perfect as much as we want, that doesn’t make it so. We can work towards a future where people don’t have to work to be able to live comfortably and where we have very different ways to compensate people for their time and effort on top of that. But we’re not there.
I’m not quite sure what you meant by your last paragraph, though.