“You’re asking a good question about limited liability, but the answer isn’t that there are no issurim when acting through a corporation.”
In fact, poskim have to reach, stretch, and create chidushim when they attempt to determine whether a corporation is subject to the halachot of a Jew. Corporations simply aren’t discussed by Chazal or rishonim because the concept simply didn’t exist. Had Jews really been involved in finance to the degree that the anti-Semites claimed that we were, the question would have been brought before the Acharonim and it is entirely possible that the idea of a Jew being able to escape liability for his/her debts/damages would have been laughed out of the beit midrash. Now that today the entire world financial system is based on this un-Torahdik concept, our poskim have had to adapt. These issues are non-trivial.