> ... because that influx of people will increase labor supply, lowering unions' bargaining ability. Unions primary leverage is their ability to withhold labor (AKA a strike).
Plenty of big unions out there, and plenty of places where growing base actually strengthens the union, since they can afford to do more for members in the event of a strike. People will back their union if their union is fighting for them.
> Innovation and efficiency creation happen as the result of capital investment,
That's one way innovation and efficiency occur, for sure. Plenty of other ways. Most of human history innovation and efficiency gains were done without capital. Not all money is capital, and not all non-monetary resources are capital either.
> Plenty of big unions out there, and plenty of places where growing base actually strengthens the union, since they can afford to do more for members in the event of a strike.
Union membership is strictly bound by the number of jobs.
Unions, especially in the private sector, cannot directly control the number of jobs. At best they can negotiate the percentage of union jobs at a facility or site.
An influx of non-union labor into an industry where unions already don't represent much of the labor force weakens a union's bargaining position.
The unions could try to attract those non-union workers to the union by explaining the protections that come from labor organizing, but if people are desperate enough for work, they likely won't want to rock the boat by joining a union.
Adding to that, in the US at least, the labor protections functions of the Federal government are being systematically undermined.
Plenty of big unions out there, and plenty of places where growing base actually strengthens the union, since they can afford to do more for members in the event of a strike. People will back their union if their union is fighting for them.
> Innovation and efficiency creation happen as the result of capital investment,
That's one way innovation and efficiency occur, for sure. Plenty of other ways. Most of human history innovation and efficiency gains were done without capital. Not all money is capital, and not all non-monetary resources are capital either.