But it's 99% b2b networking and sales, trying to get websites on board and then negotiating contracts, and it sounded pretty unpleasant for a technical person to pursue.
I don't know why there aren't dozens of these. I guess everybody wants to fully own the platform, and aggregation is unappealing to them. But there's a lot of money just waiting for whoever does it, and it should benefit writers a fair bit too--they'll actually be able to get paid under this scheme; and a $10/month subscription might actually be worthwhile, instead of getting only a single website as it is today