That is a self defeating process. Reducing returns. The cost to advertise would out weigh the returns. Every advert put up has to be read by someone, but wait everyone on SAFE is using ad blockers. Do you really think that people are going to keep getting this money making garbage. It will end up costing them a whole lot more in the PUT costs then they can ever hope to get from the much smaller PtP payments. Remember people have to get their garbage for them to earn rewards
Also you have to encourage people to put up useful content onto SAFE. After all it will cost them to do so and tehy can do it on the current web for free. As Tim says, tipping etc will not entice them to put it up on SAFE because its common knowledge people on the web won’t pay if they don’t have to.
PtP was a shift from the traditional thinking and have the network reward content uploaders. And like most of SAFE you can “manipulate” how things are done to make more than others, but hey its worse on the clearnet. Its there not to be perfect but to encourage content makers. And I defy you to name one system today that rewards content makers (only) perfectly without being able to be gamed. At least PtP has a purpose and while very small rewards it has a small gaming profile compared to anything else we are used to.