Pilots can easily be replaced? Really?
A type rating and line training takes approximately three months with approximately 12 six hour sims and 10 ten hour flights. That's 172 hours of instructor time. Multiplied by 750 pilots that's 54000 hours or 2250 days of training. Training supplied by, you guessed it, other pilots!
That's a strong bargaining point I think!
As YP states, reality really isn't your strong point.