Balesir
Adventurer
Yes, eTools was downloadable, but I think you are also missing half the picture. It would have been (actually, was, I assume) small-time profitable for WotC to sell PDFs of older edition material after 4E started up. They had all the PDFs - selling them was pure profit - but they stopped doing it. Sure, keeping a 4E OCB available for subscribers would attract subscriptions and make money - but that does not seem to be the way they work. I'm not saying it couldn't happen, but every recent analogous example indicates that it won't.Were E-tools online only or downloadable?
Because if downloadable, you're entirely missing the point.
The reason to migrate to online only is that then, even when you stop making new stuff for 4e, people playing 4e will still have to pay a subscription fee to access the stuff you've already made.