That is not so, you are confusing the mark of the beast, with the image of the beast. These are two entirely different things. Whilst the mark of the beast is given by whichever nation is symbolized by the "second beast" aka "false prophet", the "image of the beast" are simply forms of government that image the nation symbolized by the "beast" aka the "first beast". And so, whoever resists/refuses to establish this form of government, the image of the beast, is then killed. Did it not occur to you that there is a reason why America is promoting democracies/republics all around the world, both covertly and overtly? These are images of the beast, for the original beast "that was", was the Roman republic, which now America images, and also caused the entire world to image, and is also what the final United States of Europe will be, a democracy/republic (8th head of the first beast). I have a separate study on which nations of these beasts symbolize, and what the image of the beast is, and who the antichrist is,
The Identity of the Antichrist, the Two Beasts of Revelation, and the Whore of Babylon | Wisdom of God .