Those types of platforms seem like mix of subscription, paywalls, and v4v, with revenue coming from different activities all under the umbrella of their service. Some content given away for free. Some subscription only. People can tip. Ad revenue and sponsored content may come into play too. Giving artists tools is a good thing. I don’t think paywalls specifically are a good tool, as they don’t really protect your content, but you and others obviously disagree. We’ll just disagree on that. I think ultimately what matters more is that creators on Nostr need to have the options to generate revenue from many various activities across as many Nostr apps as they want. That mirrors real life anyway. Some of that revenue may come from tips/v4v, some from subscriptions, paywalls, physical merch sales, etc, perhaps even ads/sponsorships eventually.