I'm glad they veto'd this. What the FIA is asking for is frankly crazy. They make the teams build, what is most likely one of the most complex engines in the world, then ask them to make each one last a quarter of a full season and then they want to tell the manufactures how much to sell them for? Ask Arivebene said when asked, you cannot ask a supplier to produce a product and then a year later, force a price on them.
Mercedes, Renault and Honda all agree and I'm sure if they all dropped out, we would have no F1 to speak of, the FIA need to find other way of cutting costs, forcing the teams to sell the engines at a loss is not the way to do it. The works teams would have zero incentive to supply the independent teams. That means, no Williams, no force India, no Lotus, no STR, no Manor.
Also, sure it's a bit crazy that a team can veto a rule, but as far as I know, this is only the second time they have used their veto power and i think it is justified in this case.
Onto the question of if they have too much power, but look at what Red Bull is doing. They have done much more to interfere in the sport in the past 6 years than any other team and now they want to quit cause they are not winning. Ferrari have been through thick and thin they have been there from the beginning, they may have threatened to quit, but they haven't and that does deserve something.