Let's say Tesla "wins", in the sense that the Union gives up its fight to force Tesla to sign a collective bargaining agreement. I see that as unlikely given earlier similar disputes (Toys R Us probably the most famous one) But even if that happened, a lot of left leaning potential Tesla buyers now dislike the brand and are less likely to purchase the car. It would be winning a battle but losing a war. A much smarter strategy would have been to find a pragmatic, quiet, local solution while making sure that is does not effect Tesla's global strategy. I think a smart communication strategy could have both made Tesla look good locally and still explain why unions in the US are not in Tesla employees interest.
The "war" is the transition to renewable energy to save this planet, and preserving consciousness by becoming a multi-planetary species.
This battle, as you call it, is an extortion racket using their muscle to force someone into an agreement against their will. This is considered illegal in most countries with a system of law based upon the right to contract.
The further fact that entering into this agreement requires Tesla to give IF Metall a seat on the board makes it that much more criminal.
Tesla doing any of these things would be detrimental to winning the war. The tactic of basically ignoring IF Metall's demands and forcing them to keep digging themselves into a hole is the only effective approach to take. Should Tesla eventually be forced to abandon these markets due to the combined mindset of the local unions, media and the citizens, then so be it. Who will be hurt the most?
Tesla will move their deliveries to any of a number of untapped nations who would love to have the Nordic cars sent their way and the Nordic buyers would have to settle for other brands of EVs.
They think they are quite a bit more important to Tesla than they actually are. The strong-arm tactics won't work and the Nordic people will be the ones missing out on owning Tesla products and stock as they continue to grow and improve.
Despite this abhorrent behavior, Tesla has so far been steadfast in providing sales and support for their products, and will continue to do so, regardless of the challenges, until they are asked to leave.
That dedication to provide the people these services is the mark of excellence for Tesla to continue to do their best in such an adverse environment created by a group of thugs.