> there is no denying that it's the quicker and cheaper method

I don't think anyone is disputing that. The problem is that "cheaper" and "faster" comes with the cost of injustice.

> Labor unions are adversarial to change and innovation and especially in this era there is no place for them

Why not? What replaces them? The entire point of unions is to try to correct the serious power imbalance between employer and employee, an imbalance that historically (and currently) has been eagerly leveraged against employees.

What sort of protection against this would you recommend? Much stricter regulation?