Absolutely not.
It depends what you use to define the word need. There was a market for the item and other consoles. Product sales indicate that individuals have made purchases in the millions for each of the different models with hundreds of millions sold. Games, DLC and accessories to support the products have even greater sales. The economy needs the sales and production of these products for this multi billion dollar industry to continue or some replacement type of product. Years ago before the world's economy depended on the industry there might have only been a desire, but it is at a point where they are needed to at least be replaced by a new desired product.
Sorta, You Need a Playstation Eye, Because its Playstation Move. You need a Playstation Move Controller and Playstation Eye. Thats It.
No, you shouldn't need to.
a router or a modem
The PlayStation Vita is a standalone system. You do not require a PlayStation 3 to use it.
Yes it is a Playstation Move required game
yes, but you will need to get a converter
The playstation 2 doesn't have WiFi capabilities like the PlayStation 3 and PlayStation Portable do.
no you can play on playstation no you can play on playstation
You need an online connection and a PS3 for the Playstation Network
You need a license from Sony to make a Playstation Game
Playstation Plus does not have anything to do with hacking on the PS3 and is a Playstation Network premium service
you need a ps1 memory card