"It's plain to see that the inherent coordination problems facing workers are much harder than the ones facing managers"
It is not plain to me. Employers are just people too, but if they try to conspire with other employers they must do so in secret lest their conspiracy be discovered and punished. Your example of wage fixing in the valley shows this in action perfectly. Yet if employees want to do the exact same thing for the exact same ends (manipulating labor prices), they are not only allowed to do it in the open, conferring great advantages, but they are also protected by the government from any sort of retaliation. They may even be allowed to use company property to organize with!
It's pretty clear therefore that labor has the advantage here.
"Please explain how history has repeatedly shown capitalists more ready, willing, and able to exploit their position"
It hasn't. That's a Marxist trope, not an accurate reading of history. History is full of businesses going bankrupt or being outcompeted because of rising labor costs, or indeed, being exploited by unions. The history of Detroit is a good example of that, or the entire British auto industry. Alternatively, look at all the software companies struggling to compete with FANG-boosted wages. It's hardly an environment where capitalists are exploiting the workers.
Coordination problems go up in complexity by the square of the number of actors. Since employers meaningfully participating in the labor market average many more than one employee, and employees average somewhere around one employer, employers start at a very significant structural advantage, particularly large employers. The scant legal protections you mention serve to help equalize this disparity, but it is laughable to suggest that they somehow put employees out ahead.
The history of labor is full of people killed and injured by police and other thugs-for-hire by capitalists who couldn't be bothered to care about anything but their profits.
"Coordination problems go up in complexity by the square of the number of actors"
Yeah? Then how comes unions are often bigger than companies, sometimes containing entire industries? This "fact" sounds made up. People are not random graphs.
As for violence, the history of unionism is full of union thugs beating up scabs, management, and anyone else who got in their way. Anyone can play the game of "long ago some people were violent". It's not relevant to today's situation.
It is not plain to me. Employers are just people too, but if they try to conspire with other employers they must do so in secret lest their conspiracy be discovered and punished. Your example of wage fixing in the valley shows this in action perfectly. Yet if employees want to do the exact same thing for the exact same ends (manipulating labor prices), they are not only allowed to do it in the open, conferring great advantages, but they are also protected by the government from any sort of retaliation. They may even be allowed to use company property to organize with!
It's pretty clear therefore that labor has the advantage here.
"Please explain how history has repeatedly shown capitalists more ready, willing, and able to exploit their position"
It hasn't. That's a Marxist trope, not an accurate reading of history. History is full of businesses going bankrupt or being outcompeted because of rising labor costs, or indeed, being exploited by unions. The history of Detroit is a good example of that, or the entire British auto industry. Alternatively, look at all the software companies struggling to compete with FANG-boosted wages. It's hardly an environment where capitalists are exploiting the workers.