No, the welfare system exists in tandem with the capitalist nature of the countries. In a capitalist society it’s a concession from the ruling class to placate the masses. Look the other way on the value extraction, war crimes, and exploitation since you’re getting free healthcare funded by blood money from the third world. Yes, labor agitation plays a major part in the creation of the system, as the ruling class will give these concessions to stop further agitation, but it does precisely that: stops further agitation.