> Exactly. For every ICO that pops up, ask does this use case require a special token?
Well, creators of Ether have already got their share, didn't they? What should be the motivation of "dApp" developers in your opinion if they can't earn the way Ether developers did? Do you expect them to use Ethereum for the love of humanity? Because, you don't really need Ethereum to create decentralized applications. There were decentralized (p2p) forums way before the crypto movements. There is a decentralized (p2p) search engine that works just fine without Ethereum. If not ICO, why would I pay the Ethereum network to deploy my contract, develop an app, promote it, and then convince my users that they should pay the network to use my app, too (assuming that I hold 0.0000 of Ether and don't care about the rise of its price)?