OK.. please dont shoot me.  im just playing devils advocate here.. and using your car analogy... to show you from cointerra's point of view.

youve ordered a sports car that was advertised as going at 200 MPH and consume 20 MPG and youve paid them $6,000 up front for it.

Now, theyve come back and told you that theyre sorry, that the car that they built will go 170 MPH, and consume 24 MPG and with further tweaks in the future it may go faster.

Theyve told you you can have a choice...

do you still want your sports car delivered even though it goes a little slower.. at 170 MPH and consumes 24 MPG?  or would you prefer a refund?

Do you think a car company would allow you to take your car... but because it doesnt go 200 MPH and only goes 170 MPH do you think they will offer you a 15% refund?  (i dont think so).   theyre offering you your only two choices... 1.  take it as is and hope they continue to tweak it... or 2.  have a refund.

The cost of building the car was the same so its not like they can afford to refund you anything.  if you choose to take a refund they will sell the car to someone else.

dont shoot me.. im just explaining it in the way that theyre seeing it.. and using your car analogy works well.