If that's your point of view then no, the web has never been suited to spreadsheets, it was only suited to PowerPoint-like presentations when Opera had some nic

If that's your point of view then no, the web has never been suited to spreadsheets, it was only suited to PowerPoint-like presentations when Opera had some nice markup for that functionality, and it is only suited for Word-like documents, with ugly hacks for equations. In the end, you end up making Google's argument just stronger.