Had to research it, well more like glanced at it :D While I still have some questions, you could possibly use that. The network can decide to refuse some files if more than half of it rejects them, having at least some content moderation. The question is if you need something like this. It creates more technical baggage to set up/carry for having data permanently accessible. I would argue that bootstrapping the platform is a bigger problem - the old chicken/egg problem with creators/consumers. Having a browser plugin that would allow creators to one-click mirror their content to Nostr is not only imaginable, but given the clawd swarms, merely a matter of someone willing to burn tokens on this. 

The rest? Already here:
- Discoverability via NIP-15 for marketplace (or NIP-99 for classified listings)
- Storage via either Blossom or NIP-96, plenty of providers; spinning one up on some cloud provider privately is not that much of an issue (could even imagine having the option to spin up a private provider just per creator, if you convince them to eat the upfront cost); files stored encrypted, so provider has plausible deniability (you could go even a step further and have files split into two, hosting each part elsewhere - only with both halves AND the decrypt key could you see content, no way for operators to get blame, although IANAL)
- NIP-EE with its encrypted messages (for one-shot purchases) and group chats (for subscriptions, one group per tier) as method for deploying cipher keys
- Zapping works good enough; you can even use just zap receipt events if you trust your provider and he doesn't provide API

It's "just" a matter of linking it all together. That, and that there are zero financial incentives for the developer. You could make a website that would handle LN addresses (while siphoning fees) and have nice UX around everything, but the appeal quickly diminishes for creators if you are just another platform that takes its share, plus you paint a big red X for any prosecution. #nowinningmove