>And because it's on the blockchain, ownership is provable, the content is permanent, and it can be directly monetized forever. How can content be monetized foreved if it costs something to upload (send a transaction to create the block) but nothing to browser (navigating through the blockchain costs nothing)?
A satoshi = 0,00000001 bitcoin and 1 bitcoin recently crossed 10k dollars. So being conservative, 10 bucks would allow you to publish a very simple website.
Bitcoin's blockchain is a terribly inefficient place to publish websites, unless you're looking for censorship resistance. The Bitcoin blockchain is secured by the strongest network on the planet by far. So once you publish it you can be pretty sure it won't be easily taken down.
Navigating the blockchain in the sense I think you mean wouldn't cost anything. You'd just need to interpret the encoding of the text that was published.