the stakeholders/investors have priority here and they have sold the company to the highest bidder.
at this point anyone participating or showing support behind union is at risk of being profiled and black listed in the industry and not just EA.
its in their collective interest to setup in jurisdictions outside the US where labor laws make the latter illegal but certainly not in many parts of the world and jurisdiction arbitrage makes it a very real probability.
my advice to anyone working at EA or any unionized white collar jobs in this nidustry and relate to keep your heads down and don't post your thoughts in public.