Anytime this comes up, it's worth pointing out how deeply weird US unionization is compared to the broader world.
There is now a union ... just for Wizards of the Coast employees. UWOTC-CWA now has a monopoly on negotiating for WotC employees. Dues flow up to the CWA, but members don't necessarily get the benefit of bargaining industry-wide. There is also no choice within WotC for what union represents you.
It's still a deeply flawed relationship, especially compared to what a median European enjoys. It's not a simple "US companies bad - EU companies good" - the NLRA is in desperate need of reform by Congress and political actors across the US have stymied progress.
It’s not “deeply weird” but was intentionally legislated to prevent labor from obtaining similar sectorial bargaining power and political influence as they had in Europe. Some entertainment industry unions had already achieved similar stature pre-WWII and were grandfathered in, but the US learned their lesson here and explicitly sought to atomize at the workplace level.
I’m familiar with sectoral bargaining in the abstract but wasn’t aware European workers had the ability to choose which union represented them in negotiations. How does that work in practice?