Windows Mobile is far from perfect. But on the other hand Microsoft isn't making ads like these. If you do something like that I am expecting that you really have the the most awesome technology around the block. And then you get a 300 MB download as a hotfix
These two worlds (world 1 = ads, world 2 = my download yesterday) don't match at all...
As to the difference: it does. I could only watch a movie in low quality on netflix because for half a hour I had to download the update. But that isn't the big thing. In Europe a lot of contracts (DSL, or wireless cards that you put in your PC) come with download limits... Do I really need to use 1/4 or half of my monthly quota for one hotfix that updates a texting bug?