The new MBP is basically gambling. You take your money to the Apple Store. They give you a computer, and a year down the line you see if that computer still works.
Apple products used to last an age, that is what justified the price. There are many people in this thread using old MBPs, including myself.
The more expensive a computer, the longer it is expected to last. It is quite normal to expect 5 years of use out of these things. I see plenty of evidence that this keyboard design is not capable of that.