Bob,
I do understand your concerns. But I like to add several remarks. Standard in Europe we use A4 ( ca 8.2" x 11.6"). Subtract the free edges and the really used spaces for music is 7.5" x 9.5". But on an iPad you use the max available screen space 5.8" x 7.8". This is 26% smaller then A4. In practice if you size the chords 26% larger the chords size is about the same as on paper if you wish. Then if more pages are needed you may need a foot pedal. Then iPad seems to launch a larger 12" screen version ( http://www.macworld.co.uk/news/ipad/ipad-pro-plus-release-date-rumours-force-touch-poll-ios-9-run-osx-3492180/ ). Then larger screens exist as well (http://mashable.com/2014/08/19/fuhu-big-tablet/ ).

Basicly many especially older people do have all kind of reasons not to switch to paperless music reading, since any new technique needs a learning curve (I'm 76 and more then happy with my iPad). Nevertheless I just notice that also in the professional music business for both classical and entertainment music, iPad's and alikes are used everywhere. In the Netherlands I should say about 30% of the musicians is already using it. No printing, directly exchange any music, transpose it for your instrument or the singers voice, etc.etc. Correcting, erasing, you name it. Don't miss the boat!!

My concern that iPad was the only one which had a decent music reading (and writing/correcting) tool(s) is slowly vapourating. The "MusicScore Songbook" is available for iPad and any Androïd tablet. I'm still waiting for "ForScore" to enter the OS Androïd market.

Rob

Musicians and music publishers are still wasting too much paper...come on men we live in the digitised age...Wake up!