It's needless to say but I have to say it anyway: Most general contractors and owners don't give a hoot about their subcontractors' success. They may say they highly value subcontractors but in truth subcontractors are just a means to an end. GCs use subcontractors to perform work, however, GCs and owners cram, stuff, stick, jam, poke and push the majority of their risk down the throats of unsuspecting subcontractors via slickly written subcontracts.
The best way to find out if an owner or GC really cares about one's success is to send him a bill for more than the contract amount. Try sending him a bill for delaying the job or for out-of-sequence work. One will know the honeymoon is over when you send him a bill for interest on past due payments and retention. Consider the fact that there is no marriage to the GC or owner but married to the contract signed. So, who is looking out for you?