If they had a common subscription, where you pay one reasonable fee and they divide it up according to whose articles you read, I'd subscribe to that. Since they don't, I subscribe to one paper and do workarounds on the others. I feel this is ethical because if everyone did it, with a decently random distribution, then the newspapers would survive just fine. They'd make the same overall revenue as when everyone had one newspaper, showing up at their doorstep each morning.