When individuals or organizations abroad boycott Israel, we are all up in arms, as we should be, trying to explain the underlying injustice, stupidity and antisemitism. So let me remind those quick to boycott friends the principle of treating others as one would wish to be treated.
Also, when you boycott someone, there are always innocent "bystanders" who get hurt. If you boycott a manufacturer (by refraining to buy their produce) because of business practices that are against your principles, to teach them a lesson and show that you stand up for your values, the manufacturer will eventually go bankrupt and a lot of good people will join the ranks of the unemployed. Demanding the CEO to resign is IMHO a much better move as it will only punish the policy maker, not the hard working, decent people. "Business is business" is unacceptable, so do your business (pun intended) elsewhere, Mr. CEO.
When boycotting the Badatz (by not buying produce with their kosher certificate), a lot of manufacturers may get hurt. I understand the intention to make businesses refrain from applying for this certificate as it would hurt their business (Badatz consumers are only a small group of Israeli society). If no such certificate will exist, the ultra-orthodox will either find a way to eat food with regular certificates or manufacture their own food (not such a bad idea, as it would make them contribute to the Israeli economy). However, this can be a very long process. Until then, manufacturers will lose business, lay off people and we are back to the previous scenario, but on a larger scale.
The regular milk carton we bought today in the supermarket has no less than 4 certificates. And who do you think pays all these kashrut supervisors? The consumer. And in my case, the consumer doesn't need even one, but is willing to pay for one only as a tax for living in a Jewish country.
Boycotts are like war and hatred, they have a beginning, but often no end. You can reach a stage of everybody boycotting everybody else for one reason or another until standstill. Society will look like a busy Tel Aviv junction 2 minutes after the traffic light goes off.
Let's drink some wine to fighting for our universal values in the parliament, the courts, the streets, but not in the supermarkets. And if I may chose the wine, I'd go for Golan's 2T - my new favorite. Cheers!