to crusty_bread:
However Massa has a contract for five years. So he is hardly replaceable by Williams. And Bottas is Williams' kid. Replacing him would mean a loss of effort and investment put into him. And from a marketing perspective it is not good to have two Brazilians as "sharp drivers". Although Bottas is not bring a lot of sponsors so far, its replacement is also questionable.
We'll see what happens next year, but I see there is a risk of further holes in the budget of Williams...and it just make me not happy !
(sorry for poor English

)