Feature availability may vary by device.
They state this because you OBVIOUSLY won't have touch interface on non-touch devices, and thus any/all touch features available in the OS will not work on that device (that is just a single example of features that will vary, large screen UI won't make sense to use on a 4 inch smart phone, phone capabilities won't work on a desktop with no phone number, picture taking won't work on a device without a camera, etc., etc., etc., the list goes on and on).
Some editions excluded.
This is explained. They exclude upgrading Enterprise editions of the software. Those editions were purchased typically as site licenses for businesses, and are excluded. You need to arrange new site license agreements (or maintain your existing ones) in order to upgrade your windows licenses (in which you will be covered by your site licenses, and not the free upgrade license anyway).
However, as we haven't been complaining about China's low prices hurting our business, shouldn't China raising the price be good for other train makers?
I don't see how this is good for any other train makers other than China. China's train maker will still undercut the price, and now will simply have one less company that it is betting against when doing so, ensuring that it undercuts the price by the least amount needed to win the contracts. The only one that wins in China in the long run when it forces all the other train manufacturers out of business and then wins the contracts by fiat as the only entity.
I tell them to turn to the study of mathematics, for it is only there that they might escape the lusts of the flesh. -- Thomas Mann, "The Magic Mountain"