I don't think you can categorize layoffs as unintentional striking. Businesses are capable of laying off a lot of their workforce without crumbling, they just wind up running leaner and pruning some of the growth they had in the last few quarters. Striking means you organize enough of the employees that once they're gone the business cannot operate, no work gets done and there's an active effort by the strikers to advertise that the business is not operating in order to put further pressure on them.