Online business models are not yet foolproof, though. As I understand it Tinkercad basically went busted a few years ago because people did not want to pay for an online tool and eventually Autodesk bought it. Please correct me on the details. Also, I have no data either way to show would Tinkercad done any better as a desktop software.
(https://www.tinkercad.com/)
OnShape is certainly an exciting experiment. If they pull through financially it will be pretty strong signal, IMO.