there's a big difference between what's useful and what's neccesary. Having access to all the books online is cetainly useful, but by no means neccesary, as you can just buy the books and use them (of course, you can't exactly share the books). I highly doubt WoTC would put the books online unless it was sold as some sort of copy-protected .pdf or something at maybe $10 each. Granted, they may put some of the splatbook material online (all of the core classes, maybe?), but like the other poster said...keep dreaming.