Social media is no different actually. Creators making money on social spend enormous money to produce/promote/support their content, adding 10-100$ monthly to have their own relay to make sure their followers get their content is a rounding error. Blue checks are the proof of this.

Median user OTOH isn't going to run public relay/p2p-thing on their phone, that's 100% certain. That's where there is zero incentive to waste battery and bandwidth and space to "support the network" where all you do is scroll through memes for a couple minutes per day, when there are alternative apps without built-in relay that don't produce that waste. 

Readers aren't going to pay for the network. Creators will.