Since most people send & receive files, it's absolutely stupid to try to get them to change software every 3 years.

As stated by others, I'm sure many people will be OK with Ooo etc. These packages are still a little bit flaky in parts, and lack some basic facilities. Since government agencies are now strongly encouraged to use them, perhaps the governments in question could be persuaded to finance the finishing touches. We really must start getting ready to welcome the post-MS era.