Flattr is the kind of idea that sounds great, that people love talking about - if only they could make a small donation to every website they liked - but that doesn't work because people are fundamentally too selfish. This is why ads are the only viable business model for a kind of "ephemeral website" - something you visit only briefly, derive some short knowledge or pleasure from until you follow a link somewhere el…
Twitch subscriptions and Patreon has shown, that if you bind a website/project to a creator, and you get benefits for donating/subscribing, that you can have a very viable business model. Both as a creator, and as a platform to facilitate it. Most websites, and indeed open source projects are pretty faceless, and require limited interaction with it's creator. I believe, if you somehow "solve" that problem first, peop…
One cannot understate how important Amazon Prime (as Twitch Prime) is to the Twitch subscription ecosystem. IIRC roughly half of all Twitch subscriptions are Twitch Prime.
Twitch is aupser aggressive with ads. Youtube has skippable pre-roll ads. Twitch does not and might have 4+ pre-roll ads plus in-stream ads every 30-60 minutes. The ad density Twitch aims for is 4+ minutes per hour. But Twitch doesn't like the subscription model anymore. They've cut the revenue split. Previously many creators got a 70/30% split, now almost everyone gets a 50/50% split.
The big problem is that ad revenue scales in a way that subscriptions don't. Ad CPMs can go up, you can increase ad desnity easily (to a point) and ad revenue scales with view count in a way that subscriptions don't (eg a creator with 100K concurrent viewers won't have 100 times the subscriptions of someone with 1000 CVC).
You're seeing the same trend with streaming services. Netflix killed their basic tier and wants you to watch ads because it's more profitable than the subscription. Prime Video has thinly veiled a price hike by adding an extra ad-free monthly fee.
My point is that subscriptions, or any form of voluntary payment, is icnredibly hard to make work and even the most successful examples, like Twtich, require great effort and a supporting ecosystem like Amazon Prime.