Three great scenes in Philip Roth's Letting Go: Each could be a short play

I wonder why Philip Roth never tried his hand (at least I don't think he has) at writing plays? He's such an expert at dialog, and not just at creating dialog (or triolog, at times) that seems realistic but also at using dialog to illuminate character, to examine and exhibit the mind at work, and (to a lesser extent) to advance the plot. I've mentioned in recent posts a few of the great scenes in Roth's first novel, "Letting Go," and I continue to come across more as I read deeper into the book - and can't you imagine (if you know these scenes) each one as a one-scene play or as material for an acting workshop?: the central/Rothian character Gabe Wallach taking the shy, pregnant young waitress out to dinner to discuss with her the procedures of adopting her expected baby? They sit in a sort of touristy lakeside Chicago restaurant and he awkwardly tries to draw her out and then to get her to discuss the pregnancy. Very deft and troubling scene. Or, Libby at her first meeting with her psychiatrist, at which she dances around her problems and then, at his gentle urging, bursts out with all of her frustration about her marriage and the crush she has on Gabe - then, after the doctor mentions the bill, she threatens to jump out the window. Or, Paul Herz returns home after learning of his father's heart attack and discusses his parents and his miserable life with long-ago girlfriend now comfortably married and living in a modern (circa 1955) Brooklyn apartment, as the baby sleeps beside them.