antidepressants can help people fix root causes. take them for 6 months to 2 years or so, break out of a bad cycle, get some space without depression symptoms to build up healthy habits and restore a social life.

there are some bad profit motives to keep people on SSRIs indefinitely. however at least they don't compete with other aspects of your life. and now that they are dirt cheap (at cheapest, $4 for a month supply at Walmart) the profit motives are much less than before.

hard to imagine an "AI girlfriend" that could be similarly short-term and bring positive changes. it's just dystopian. the most profitable way to run such a product is not to help, it's to eat up as much user time as possible and outcompete healthy activities and real human relationships.