Are you guys that rich that buying a console is like going to the cinema without knowing what is on theaters? You just open the wallet and buy whatever console in selling, isn't it?
You realise this happens with products more expensive than consoles right?
Like Samsung did it in August with the announcement of the S7 (not just price and launch), cheapest model was $649. And seems they didn't have any issues selling it.
We've known about these consoles for over a year now. Ppl will be financially ok to be part of the launch quite easily.