I could boycott these companies but they aren't really solely Israeli companies. For example Coca cola has its plants in Pakistan too, so the Coke available in Pakistan is not coming from Israel. IBM is not Israeli company, they have branch in Israel but they also have business partners in Pakistan (and around the globe). Honestly, you need to sift thru the list and remove non-Israeli companies if you wish people pay attention to your post.
Some of these companies, even if they are not in Israel, support Israel by financing it directly or indirectly !