It is not clear if they expect the platform support pyments to be larger or smaller than the software royalty agreement, ie whether they are paying Microsoft in the long run or vice versa. I guess it may depend on sales to some extent, although it ways there is also a minimum royalty.
Eventually yes I guess, but I think it might be a while before Nokia end up paying Microsoft (in net terms anyway). Microsoft are probably more interested in gaining market share at this point, so I wouldn't be surprised if there's more money flowing Nokia's way in the coming quarters.
