It's a possibility. Maybe they'll still be here, maybe they'll be totally gone; maybe they'll exist, but only in certain niches, or in a form that's unrecognizably different than what they look like now.
By analogy: two decades ago, US consumers were buying almost a billion dollars' worth of photographic film a year [1]. Photography hasn't gone anywhere -- people are taking orders of magnitude more photos than they used to -- but if you had invested your entire net worth into Kodak in 2000, you'd be penniless now.