2) That would be all well and good if OpenOffice ceased to exist - but it didn't and it won't. Most people don't care about politics. If OpenOffice works for them and it's still free you're going to have a hard time convincing them to switch to an unproven product.
3) I should also note that except of Google, there isn't a single supporter recognizable outside of the Linux community. Oracle on the other had is a BIG brand. If they were to make a big push behind OpenOffice they would ultimately limit LibreOffice to a Linux-only market. Again, they're competing as a cross platform office suite - not just a Linux one. This is important because people on Windows and MacOS care about brand recognition and marketing - not politics.