Right you find your suit. No problem. I installed hundreds of users the at it time popular OpenOffice (now Libre took its place). But MS knows that for wast majority MS Office is only option. Yes, it can be done in Libre too. But is there any school that
teaches on Libre or adult Computer school that teaches Libre? No, they do MS. Smart move from MS though. So anyone not computer savvy, will call for MS option.
Regarding W10, I expect it will be same s with Vista/7, where both are essentially the same OS, but 7 is totally re-aranged and optimized. Finished by other words. Start menu is no issue with 8 (there was start8 app from day one for this OS. But that solve
nothing. Based on early releases, 10 will return usability, speed of common tasks, handiness, etc. You must understand 8 was released because of tablets and phone, not much with desktops in mind. They know much of the desktop users, and especially business
users adapt slowly. 8.1 is "patch", 10 will be thought out product.
I use Linux too, for fun. But Premiere Pro, CorelDraw and other stuff I use, do not work on it, yet. I know someone will bring alternatives on the table. I looked through all of them already. But I work 15 years on that software. There is no wish to change
whole computer world on its head now. That's my point. We are dependent on MS will. They won.