It is really disappointing that more game makers didn't hop on the potential of cross-buy/cross-play. When it's available, it's great (see Resogun/Sly Cooper 4), and it's such a neat idea. I also haven't come across any games where I feel ripped-off compared to the console versions. Unfortunately, not many people actually went with it, and when they did some idiots screwed it up.
(No, Konami, I will not give you another $30 for another copy of MGS3 HD on the Vita, when I already paid you for MGS HD and MGS Legacy on the PS3.)
I don't necessarily think that Sony were wrong to advertise that feature at launch in the way they did. It's certainly something the console is capable of, and at launch it was a great potential for the Vita, but the studios didn't like the idea of buy-once-play-twice, because the console game industry is about as anti-consumer as it gets.
As for 3G gaming....yeah, the adverts were total bollocks. Anyone who knows what the latency is like on 3G knew it would be total bollocks, and sure enough, it's total bollocks. At least on that half of the suit, Sony deserve it.