Q. How will disrupting companies affect the coup? If the multinationals felt danger and left Egypt, still the Gulf and USA will support the coup and will not let it go down.
A. Multinationals leaving Egypt assumes that they have not been given a way to profitably remain in Egypt.
The strategy here is not to drive them out, but to make their profitability contingent upon using their power and influence in support of justice and in a way that reflects the will and aspirations of the population.
The reality is that you are, and you always will be, in a state of negotiation with the global owners of capital. At the moment, the only representatives at the negotiating table are the global business elite and the domestic business elite (Coup Inc), the outcome of that negotiation is a foregone conclusion.
Disruption of corporate interests not only puts you at the table, it gives you a tremendous advantage over the Coup Inc, and you will be in a position to dictate the terms and conditions for those companies to remain in Egypt. Those conditions can include an end to the Coup, which is something you probably would not even have to demand at that point, because you will have already nullified the usefulness of the Coup anyway.
Regarding US support, it is impossible to separate any American policy from business interests. Impossible. The US government is an instrument of corporate power. There would have to be a revolution in America itself before you imagine US policy disconnected form the interests of global capital.
But, let’s just imagine a scenario in which, somehow, the interests of global capital flee from Egypt completely. OK, at that point you would have conditions in which more traditional revolutionary strategies could potentially be useful; targeting the security apparatus, exhausting the ability of the regime to govern etc.