Not sure that corporate ownership has the meaning you imply here. Let's say I launch a streaming service in Europe and it attracts consumers. This brings investors that help scale up my company. Among these investors, one ends up being a scumbag 10 years later. Should people boycott my company for that reason? With this reasoning, I don't see any service that shouldn't be boycotted. Target, Meta, Amazon, Delta, Pfizer, Visa all donated money for Trump's inauguration, among dozens other big US companies. Plus, Deezer is now public. Finally, as a European compamy, it has to respect consumers privacy.