One big difference is these cases I suspect is the power of unions and regulations. If some enterprising people in New York had tried to set up their own ad hoc sanitation service where they'd drive around a neighborhood in a van and for a dollar a bag they'd drive your trash to the dump they'd be stomped down on by unions and regulations in a flash. If a hypothetical Irish banking union had sent thugs each pub acting as an ad hoc clearing house or convinced the brewers union to not deliver beer to 'strike breaking' pubs the the situation probably would have played out very differently.
Basically the real conclusion should be that strikes only work if there is also some additional force preventing outside people from filling the void left by the striking workers.
Basically the real conclusion should be that strikes only work if there is also some additional force preventing outside people from filling the void left by the striking workers.