Perhaps one of the issues now is that very nearly all depression seems to be treated as something that anti-depressants can take care of. I'm not sure what the ratio of people with "I have a chemical imbalance" depression is versus "my life sucks because, say, I lost my job or my spouse" depression, but talk therapy sounds like it's become a rare, rare creature.
Unfortunately, you also get regular doctors prescribing those anti-depressants, rather than mental health experts. Shortly before my divorce, I was definitely depressed, and my GP prescribed anti-depressants... which became completely unnecessary once he was out of my life. I mean, yes, I had moments of sadness, but with discussion with friends I pulled out of it.
Note: that is not a commentary that all depression just needs talking or sunshine and fresh air and that kind of thing. I fully believe some people have issues that are not due to their situation but to their brain chemistry. I just think we have become very bad at telling which is which. I would think supplementing the use of anti-depressants with talk therapy would be another good way to go, but we don't seem to be mainly doing this.