IMO, the days of unionism have outlived their usefulness. There are many talented people out there that would jump at the chance to write for a show like letterman or leno. I think it's anti-american to hold non-union jobs hostage and in this case, many others found themselves unemployed as a result. I believe in a fair wage but the entertainment industry has become a haven for greed and mediocrity at the expense of it's viewership and to those who want to work but cant because of antiquated labor law.
As an engineer that writes firmware to control analog hardware systems, I know the value of feedback loops and how they apply in real life.
Any system that runs for a significant period of time needs to have a mechanism to provide a feedback control system. Further that feedback loop must be present for every significant control input.
Unions were formed to provide that input to control a company's inclination to work their staff as hard as possible, with the lowest possible cost. Face it, there were real abuses back a century ago that unionization helped to control. If the unions die entirely, these abuses will come back.
The problem is that currently these feedback loops are controlling the wrong things. There is no control that keeps a viable manufacturing and/or export balance. No control on prices for entertainment sources. No control on healthcare costs.
The most visible feedback though comes with the sports and entertainment industries. The unions there are mostly concerned about whether the employee gets a fair share of the pie. The current writers strike is because the writers are not getting royalties from digital media distribution. You can say what you want about greedy writers, but the only pocket they are attempting to pick is that of the studios. Do you really think the studio will change prices based on the results of this strike?
The mechanism that is broken in sports/entertainment is one of cost to the consumer. These venues rake in unbelievable gobs of money and the consumers keep paying. $250 for a single ticket to a NFL game? Why not? $1k for a ticket to a rock concert? Yep, we will pay. $20/ticket to a movie? Sure (in some venues). Until the consumer indicates that the price is too high, this is going to continue and there are going to be these obscenely huge pots of money to be split up. If the pot is huge, why shouldn't the writers get their share?