Who needs success?
If even a small fraction of your readers feel your writing is worth the encouragement of a penny to keep it coming, then that’s some small persuasion above and beyond blogging for the love of it.
And sure, it’s turtles all the way down. Aggregators can be encouraged by their readers just as much as those who they aggregate – even by the aggregators themselves. If there’s an opportunity for an intermediating impresario, excellent.