I had this functionality in mind:
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Which is an improved version of your proposal, because the incentive is to build a good app first and the money automatically goes to apps.
But of course the problem does not come from the fact that there are no good apps, but that nothing in crypto is used.
Which is understandable the mass of people in crypto are miners and gamblers. The ordinary people have not rushed to use crypto and are unlikely to rush to use something unproven like Autonomi, so the focus should be on the node runers who will maintain the network until it is proven.
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