I think it's difficult to find treatment that works. It took years before I found something that helped my specific symtoms. Exposure therapy seems to be effective but no one said it would be easy. It involves getting involved with a situation that will make you uncomfortable. Whether or not someone with anxiety is willing to do that is their prerogative. It's hard work and it's up to the individual to decide just how much they are willing to do to get better. The good things in life often involve going through some discomfort before obtaining the prize. Personally I don't like exposures but realistically that is what I need.
So yeah...psychotherapy is good. It really depends on how much you put into it though.