It's clear to me that you don't understand depression very well. It's not a case of him being a loser, its a case of him needing help - a lot of it. A "good scolding" is the last thing he needs right now. He won't just snap out of it. Punishing him by taking away stuff also isn't going to help - he's just going to withdraw more.

When I was depressed (I've dealt with it for 10 years), it caused me to have angry outbursts, to sleep all day, stay away from the people that love me and the people I love.

I would suggest you talk to his therapist or to some other health professional to get more information. You're not going to help him by being an insensitive *** about it.

some of it's magic
some of it's tragic
but i had a good life all the way......
~jimmy buffett